Our Core

MISSION

To develop and launch servant leaders who live out their Christian faith in every area of life.

VISION

To see the often distracted lives of young adults fixated on the only reason to live.

VALUES

Authority of God's Word
Centrality of the Gospel
Stewardship of God’s Resources
Power of Partnership
Necessity of Ongoing Improvement

 

OUR TEAM

OneLife Corporate 

Peter Sullivan: Founder & CEO

My wife Debbie and I have five children. We have lived most of our adult lives in Greenville, SC where I spent 27 years working for and eventually owning Genesis Marketing. During my time at Genesis, I had the opportunity to join my kids on several mission trips. This ignited a growing desire to influence the next-generation to live for something bigger than themselves. OneLife grew out of that desire and I love being a part of what God is doing in the lives of students.

Austin Glanzer: Director of Marketing   I am recently married to my beautiful wife Liz, and a recent graduate of Lancaster Bible College. When I’m not at work or hiding from the paparazzi, I am probably running, playing some sort of sport, or watching a nonfiction sport’s movie! I love my job at OneLife because I think we have a great team of people that want the students to have the best experience ever and love Jesus more!

Austin Glanzer: Director of Marketing

I am recently married to my beautiful wife Liz, and a recent graduate of Lancaster Bible College. When I’m not at work or hiding from the paparazzi, I am probably running, playing some sort of sport, or watching a nonfiction sport’s movie! I love my job at OneLife because I think we have a great team of people that want the students to have the best experience ever and love Jesus more!

Joel Hughes: Director of Operations   My name is Joel Hughes and I was homeschooled in South Jersey with my three brothers. I enjoy playing soccer, golf, guitar and taking road trips. I graduated OneLife in 2017 and am currently a business administration student at Lancaster Bible College. I'm looking forward to seeing growth and “kaizen” implemented in this upcoming year of OneLife!

Joel Hughes: Director of Operations

My name is Joel Hughes and I was homeschooled in South Jersey with my three brothers. I enjoy playing soccer, golf, guitar and taking road trips. I graduated OneLife in 2017 and am currently a business administration student at Lancaster Bible College. I'm looking forward to seeing growth and “kaizen” implemented in this upcoming year of OneLife!

Carson Lehman: Lead to Application Specialist   My name is Carson Lehman, I was a student in OneLife Class 5 and am now a Junior in the Business Administration Program at LBC. I have been working for Onelife for 2 years now and I just really love seeing students make the decision that will revolutionize there life! When I am not a school or work I am with my beautiful girlfriend (with I met at Onelife) and my loving family and friends!

Carson Lehman: Lead to Application Specialist

My name is Carson Lehman, I was a student in OneLife Class 5 and am now a Junior in the Business Administration Program at LBC. I have been working for Onelife for 2 years now and I just really love seeing students make the decision that will revolutionize there life! When I am not a school or work I am with my beautiful girlfriend (with I met at Onelife) and my loving family and friends!

Matt Harling: SEO and Relationship Specialist   I enjoy discipleship and teaching. I discovered the Onelife program in 2017 and am now in love with it. I graduated from Onelife Instititue’s class six, and am now a student at Lancaster Bible College. I couldn’t help not getting involved in Onelife so I joined the marketing team to put my SEO skills to work. I am always pumped to hear students change through the power of the Holy Spirit here at Onelife!

Matt Harling: SEO and Relationship Specialist

I enjoy discipleship and teaching. I discovered the Onelife program in 2017 and am now in love with it. I graduated from Onelife Instititue’s class six, and am now a student at Lancaster Bible College. I couldn’t help not getting involved in Onelife so I joined the marketing team to put my SEO skills to work. I am always pumped to hear students change through the power of the Holy Spirit here at Onelife!

Derek Melleby: Executive Director   I have lived in Mount Joy, PA my entire life. I married my high school sweetheart Heidi, also a life-long Mount Joy native, and together we have three sons. I love basketball, reading, writing, but not arithmetic. My passion for OneLife stems from my life-long passion to see students learn and grow as disciples of Jesus. (Invite Derek to speak to your students.)

Derek Melleby: Executive Director

I have lived in Mount Joy, PA my entire life. I married my high school sweetheart Heidi, also a life-long Mount Joy native, and together we have three sons. I love basketball, reading, writing, but not arithmetic. My passion for OneLife stems from my life-long passion to see students learn and grow as disciples of Jesus. (Invite Derek to speak to your students.)

 
Caleb Wagner: Senior Site Developer   I am the guy “that knows a guy” so usually if you need anything I probably know somebody! Do not ever hesitate to ask! I enjoy having a good time and spending time with friends. Most times you will catch me hanging out with the Wolfpack, working, spending time in the weight room or devouring Chick-fil-A because who doesn’t love Christian chicken? I am excited about this upcoming year because I have had the joy of building the class and talking to students that are first hearing about OneLife. I enjoy answering any questions and learning what they love. It’s going to be cool seeing all the different types of students coming in and what God is going to do with them.

Caleb Wagner: Senior Site Developer

I am the guy “that knows a guy” so usually if you need anything I probably know somebody! Do not ever hesitate to ask! I enjoy having a good time and spending time with friends. Most times you will catch me hanging out with the Wolfpack, working, spending time in the weight room or devouring Chick-fil-A because who doesn’t love Christian chicken? I am excited about this upcoming year because I have had the joy of building the class and talking to students that are first hearing about OneLife. I enjoy answering any questions and learning what they love. It’s going to be cool seeing all the different types of students coming in and what God is going to do with them.

Kelly Slippey: Experiential Education Coordinator   I am passionate about experiential and holistic learning. This love began through studying Adventure Education and Sport and Exercise Science at Messiah College. I completed a Master’s Degree in Higher Education from Geneva College in 2016 and I am now getting to combine my love for college student development with experiential and holistic education at OneLife. This is a dream come true!

Kelly Slippey: Experiential Education Coordinator

I am passionate about experiential and holistic learning. This love began through studying Adventure Education and Sport and Exercise Science at Messiah College. I completed a Master’s Degree in Higher Education from Geneva College in 2016 and I am now getting to combine my love for college student development with experiential and holistic education at OneLife. This is a dream come true!

Emma Hurst: SWU Enrollment Specialist   Hey there! I am an alumni of Three Springs OneLife Class six and absolutely love the OneLife program. I am also a wedding and senior portrait photographer. Sunrise watching, reading the Word and eating ice cream are my three favorite things and are fantastic when put together. I am in love with the simple gospel and am honored I have the opportunity be on the OneLife team!

Emma Hurst: SWU Enrollment Specialist

Hey there! I am an alumni of Three Springs OneLife Class six and absolutely love the OneLife program. I am also a wedding and senior portrait photographer. Sunrise watching, reading the Word and eating ice cream are my three favorite things and are fantastic when put together. I am in love with the simple gospel and am honored I have the opportunity be on the OneLife team!

Collin Proctor: Social Media Specialist & Videographer   My name is Collin Proctor. I have an amazing family of 7. I am studying Live Production at Lancaster Bible College. In my free time I enjoy reading books, watching movies, playing sports, hiking/outdoor activities and traveling. I did OneLife at Three Springs in 2019 and just fell in love with the program. I hope to use my passion for videography to show students what God is doing at OneLife.

Collin Proctor: Social Media Specialist & Videographer

My name is Collin Proctor. I have an amazing family of 7. I am studying Live Production at Lancaster Bible College. In my free time I enjoy reading books, watching movies, playing sports, hiking/outdoor activities and traveling. I did OneLife at Three Springs in 2019 and just fell in love with the program. I hope to use my passion for videography to show students what God is doing at OneLife.


ONELIFE Lancaster

Zac Northern: Lancaster Site Director   I am originally from Pittsburgh, PA and have the blessing of being the husband to Jessica and father to our daughters Naomi and Lucia. After graduating from Geneva College with a BS in Psychology and an MA in Higher Education, I was a campus minister with the CCO (Coalition for Christian Outreach) working at Waynesburg University and Grove City College. I love my job because I get to lead students in the wise way of Jesus and prepare them to follow Him in every area of life as we taste and see that He is truly good.

Zac Northern: Lancaster Site Director

I am originally from Pittsburgh, PA and have the blessing of being the husband to Jessica and father to our daughters Naomi and Lucia. After graduating from Geneva College with a BS in Psychology and an MA in Higher Education, I was a campus minister with the CCO (Coalition for Christian Outreach) working at Waynesburg University and Grove City College. I love my job because I get to lead students in the wise way of Jesus and prepare them to follow Him in every area of life as we taste and see that He is truly good.

Logan Griffey: Resident Leader   I am from Cleveland, Ohio. I attended Clarks Summit University where I studied Biblical Studies & Camp Ministry. The last several years I’ve been able to work at some really great camps where I’ve experienced the value of experiential learning and discipleship. I’m excited to be back at OneLife and join in as we help young people understand themselves, others and God on a deeper level while getting to seek life together. I’m looking forward to working alongside you all.

Logan Griffey: Resident Leader

I am from Cleveland, Ohio. I attended Clarks Summit University where I studied Biblical Studies & Camp Ministry. The last several years I’ve been able to work at some really great camps where I’ve experienced the value of experiential learning and discipleship. I’m excited to be back at OneLife and join in as we help young people understand themselves, others and God on a deeper level while getting to seek life together. I’m looking forward to working alongside you all.

 
Alaina Wheeler: Assistant Site Director   I grew up in Frederick, MD and graduated from Grove City College with a degree in Entrepreneurship in 2015 before beginning my work at OneLife this fall. I love my role as a Resident Leader because it provides new opportunities for me to seek and share the glory of God alongside a wonderful community!

Alaina Wheeler: Assistant Site Director

I grew up in Frederick, MD and graduated from Grove City College with a degree in Entrepreneurship in 2015 before beginning my work at OneLife this fall. I love my role as a Resident Leader because it provides new opportunities for me to seek and share the glory of God alongside a wonderful community!

Demi Brown: Resident Leader

Demi Brown: Resident Leader


SOUTHERN WESLEYAN UNIVERSITY

Matt Hunter: Site Director   I grew up on a horse farm in upstate New York and I’ve been a Christian for as long as I can remember; although there have been (and continue to be) profound moments of God’s transforming work in my life. I majored in Christian ministries in college and worked in Urban and Suburban Youth and College Ministry for 5 years before I started my PhD in Religious Studies – completed in 2010.

Matt Hunter: Site Director

I grew up on a horse farm in upstate New York and I’ve been a Christian for as long as I can remember; although there have been (and continue to be) profound moments of God’s transforming work in my life. I majored in Christian ministries in college and worked in Urban and Suburban Youth and College Ministry for 5 years before I started my PhD in Religious Studies – completed in 2010.

Anna Tabor: Resident Leader   Originally from North Carolina, I graduated from Anderson University with a degree in graphic design and started working at Onelife in the fall of 2017. I love my job because of the intense growth the students experience as they flourish in internationality, leadership, their purpose, and their understanding of Jesus and who they are in Jesus.

Anna Tabor: Resident Leader

Originally from North Carolina, I graduated from Anderson University with a degree in graphic design and started working at Onelife in the fall of 2017. I love my job because of the intense growth the students experience as they flourish in internationality, leadership, their purpose, and their understanding of Jesus and who they are in Jesus.

Gavin Potter: Assistant Site Director   I am from Central, South Carolina, graduated from Southern Wesleyan University (SWU) in 2015 with a degree in religion and started working at OneLife in the fall of 2015. I love my job because I am passionate about knowing and experiencing life with Jesus while inviting others to do the same (which is what we do at OneLife!).

Gavin Potter: Assistant Site Director

I am from Central, South Carolina, graduated from Southern Wesleyan University (SWU) in 2015 with a degree in religion and started working at OneLife in the fall of 2015. I love my job because I am passionate about knowing and experiencing life with Jesus while inviting others to do the same (which is what we do at OneLife!).

Harley Cavallo: Resident Leader   I hail from the suburbs of Philadelphia where I completed a degree in psychology and with minors in criminal justice and Bible at Cairn University. After graduating in the spring of 2019, I spent the summer working as a TSS before moving to South Carolina to work with Onelife starting the following fall. I love Jesus and the stories He so graciously gives us to tell, so it is an incredible honor to walk with students in part of their story where they get to know Jesus so much more intimately and intentionally.

Harley Cavallo: Resident Leader

I hail from the suburbs of Philadelphia where I completed a degree in psychology and with minors in criminal justice and Bible at Cairn University. After graduating in the spring of 2019, I spent the summer working as a TSS before moving to South Carolina to work with Onelife starting the following fall. I love Jesus and the stories He so graciously gives us to tell, so it is an incredible honor to walk with students in part of their story where they get to know Jesus so much more intimately and intentionally.


THREE SPRINGS MINISTRIES

Timothy Cote: Three Springs Site Director   I am blessed to be married to Christa (a courageous, talented, and gracious woman), and we have four young children. I am a graduate of Lancaster Mennonite High School, Millersville University, and Evangelical Seminary. I am working with OneLife because I see the people here doing things Jesus did constantly: loving people where they are and calling them to greater purpose, meaning, significance, and hope

Timothy Cote: Three Springs Site Director

I am blessed to be married to Christa (a courageous, talented, and gracious woman), and we have four young children. I am a graduate of Lancaster Mennonite High School, Millersville University, and Evangelical Seminary. I am working with OneLife because I see the people here doing things Jesus did constantly: loving people where they are and calling them to greater purpose, meaning, significance, and hope

Myranda Shymansky: Resident Leader   I grew up in Southern Maryland but have spent the last three years studying student ministry and missions at Geneva College. The Lord has been using that time to prepare my heart for this season of my life working at OneLife. My passion for working with incoming students emerged this past year working as a resident assistant to freshman girls. I am excited to continue to learn what it looks like to lead with grace and patience, and I cannot wait to see what God will reveal to my students over the next 9 months through classroom learning and everyday community life together.

Myranda Shymansky: Resident Leader

I grew up in Southern Maryland but have spent the last three years studying student ministry and missions at Geneva College. The Lord has been using that time to prepare my heart for this season of my life working at OneLife. My passion for working with incoming students emerged this past year working as a resident assistant to freshman girls. I am excited to continue to learn what it looks like to lead with grace and patience, and I cannot wait to see what God will reveal to my students over the next 9 months through classroom learning and everyday community life together.

Katie Amig: Three Springs Assistant Site Director   I grew up right here in beautiful Lancaster County, just a stone’s throw away from OneLife @ LBC. I graduated from Geneva College in 2014, where I received a degree in psychology and developed a passion for the questioning college student. I love working at OneLife because it gives me an opportunity to do life with young adults, and to invest in them during these critical years.

Katie Amig: Three Springs Assistant Site Director

I grew up right here in beautiful Lancaster County, just a stone’s throw away from OneLife @ LBC. I graduated from Geneva College in 2014, where I received a degree in psychology and developed a passion for the questioning college student. I love working at OneLife because it gives me an opportunity to do life with young adults, and to invest in them during these critical years.

Kyle Amig: Resident Leader   I’m 24 years young and by the grace of God I graduated from Nyack College with a degree in youth and family studies. I love basketball, weightlifting, movies, having fun, and Jesus. I’m looking forward to trusting and going through the process of OneLife with the future students and having a lot of fun along the way.

Kyle Amig: Resident Leader

I’m 24 years young and by the grace of God I graduated from Nyack College with a degree in youth and family studies. I love basketball, weightlifting, movies, having fun, and Jesus. I’m looking forward to trusting and going through the process of OneLife with the future students and having a lot of fun along the way.


Pinebrook Retreat center

Joel Davis: Site Director   I graduated with a degree in Youth Ministry from Messiah College in 2013. Since then, I have been pursuing my passion to develop student leaders in various ministries around the States. I am a proud uncle to 5 nieces and nephews, I enjoy creating art, and I once lived a year without shoes. I'm excited about OneLife because I get to use fun as a tool that leads to depth in relationships and growth in the knowledge of Jesus' plan for the world at large, and specifically the lives of each student.

Joel Davis: Site Director

I graduated with a degree in Youth Ministry from Messiah College in 2013. Since then, I have been pursuing my passion to develop student leaders in various ministries around the States. I am a proud uncle to 5 nieces and nephews, I enjoy creating art, and I once lived a year without shoes. I'm excited about OneLife because I get to use fun as a tool that leads to depth in relationships and growth in the knowledge of Jesus' plan for the world at large, and specifically the lives of each student.

Kris Tanquist: Resident Leader   Grew up in Africa, love being outside, degree in Adventure Education. I have worked as a camp counselor and professional backpacking and rafting guide. I love fun and playfulness, learning how things work and interact, running and climbing, and seeing connections. God first!

Kris Tanquist: Resident Leader

Grew up in Africa, love being outside, degree in Adventure Education. I have worked as a camp counselor and professional backpacking and rafting guide. I love fun and playfulness, learning how things work and interact, running and climbing, and seeing connections. God first!

Kirsten Overholser: Resident Leader   I grew up in a Christian family with three brothers and sisters. I graduated with a degree in Human Services and Executive Leadership from Liberty University prior to spending the better part of two years on the mission field. People are what make me come most fully alive.

Kirsten Overholser: Resident Leader

I grew up in a Christian family with three brothers and sisters. I graduated with a degree in Human Services and Executive Leadership from Liberty University prior to spending the better part of two years on the mission field. People are what make me come most fully alive.

 

LOCATIONS