Staff & Leadership

John Park [Senior Pastor]


John (or “J.P.” as everyone calls him) has been the senior pastor at Ambassador since 2005. He grew up in southern California and pastored there for over 8 years before going “coast-to-coast.” He is a graduate of U.C. San Diego (B.A.) and Talbot School of Theology (M.Div and Th.M).

John has been married to his beautiful and godly wife, Sandy, since 1995, and they have two wonderful children, Nathan and Emily. He loves spending time with his family, exploring new places on the East Coast, and playing sports. When he’s not doing that, you’ll find him keeping up with his favorite sports teams, the Los Angeles Angels, the USC Trojans (football), and the Duke Blue Devils (basketball).

John loves the people of Ambassador and finds it a privilege and a joy to serve them and be a part of what God is doing in and through the church. His passion is to see the church live out its biblical calling to be a God-exalting, people-loving, Christ-proclaiming, Spirit-driven, prayer-filled, and Word-saturated community of believers who are passionate about and committed to God’s redemptive plan to bless all the peoples of the world to the end that God would be glorified. Contact John.

Justin Culbertson [Youth/College Pastor]


Justin is excited to be one of the pastors at Ambassador Bible Church, having joined the church in January 2016. He grew up in New England, usually somewhere between Boston and Providence. He graduated from Liberty University (B.S. Social Sciences) in 2011, completed his seminary program from Liberty Baptist Theological Seminary (Master of Religious Education) in 2014, and was ordained at his former church in Maryland in July 2015.

While at Liberty, Justin met a pretty girl from Maryland named Amanda, and knew pretty quickly this godly girl was the one for him. Amanda and Justin were married in 2011, and find incredible joy in parenting their boys, Jack and Chip. The family enjoys Netflix binges, lots of play time with the boys, visiting family, and getting involved in gospel-centered community within the church. Justin loves to play golf, read books, and drink coffee. Also, he may or may not get a little crazy about his hometown Boston teams (Go Sox, Patriots, Bruins, and Celtics!)

Justin has a passion for seeing students engage God in worship. His hope is that students will be intentional in their spiritual growth while building healthy, gospel-centered relationships with their peers and their parents. Contact Justin.

Lucy Huynh [Children's Ministry Director]

Lucy has been part of the Ambassador family since 2010 and honored to serve the Lord as the children’s ministry (Graceland) director since November 2015. She thanks God everyday for giving her the dream job that He dreamed for her. She gets to serve families and children for an eternal purpose using all her spiritual gifts and educational training to bless the church she loves. Her prayer is that all the children of Ambassador will one day call God their “Abba Father” and live out their faith boldly for His glory.  

Lucy’s walk with God began right before college, and much of her spiritual formation developed at the University of Virginia with the help of her college fellowship. From very young she had a heart for children and families but never thought she would be in full-time ministry as she is today.  Her heart for children and equipping adults that care for them led her to pursuing a  M.A. in Educational Leadership and Administration from George Washington University (‘11). After grad school, doors opened up for her in serving God’s people at Ambassador.  

Lucy was recently married to her husband Tien in August 2017. They met and fell in love at Ambassador. It has been a joy serving their church together. Contact Lucy.

Liz Kim [Office Assistant]

Liz joined our staff as our church office assistant, because of her desire to serve God through ministry. She graduated from Indiana Wesleyan University with a Bachelor of Science in Intercultural Studies. After college, her passion for other cultures took her to Seoul, South Korea where she taught English for two years. After returning to the States, Liz met her husband Joon. Liz loves cooking different types of cuisine, watching Korean dramas, and traveling with her family. Contact Liz.


Ken Ahn [Chairman]

Ken was born and raised in Northern VA, having only lived outside VA during his time at Cornell University in upstate NY.  He met his wife Judy here at Ambassador and they married just before Y2K.  They are raising two wonderful children, Andrew and Lindsey, in South Riding, VA and are learning to be responsible dog owners of their rescue Reggie.

Judy works in Fairfax County and Ken works as an ERP consultant currently supporting a local government agency.  In his spare time, Ken can be found on various fields and courts coaching his children’s sports teams and is an avid Cowboys, Wizards, Capitals, and Nationals fan.  Go figure!

Ken is humbled to serve the church as an elder.  He also leads a men's small group and oversees the small group ministry.  With a passion for seeing God work through teams, he is excited to see the Lord continue to grow the Body of Christ at Ambassador according to 1 Cor 12:12-31.

Lawrence Fan

Lawrence grew up in Baltimore, Maryland having emigrated from Hong Kong at an early age.  Lawrence is married to his better half, Lucia, since 1993. They are blessed with four boys; Evan, Trevor, and Mitchell and Daniel.  The Fans have been attending Ambassador Bible Church since fall of 2003.  From 2006-2012, he served as an elder at Ambassador.  Further, he has had the opportunity to serve at ABC in leading small groups, community groups and the Men’s Ministry as well as mentoring other men.  In serving and building lasting relationships at ABC, Lawrence’s love for and walk in Christ has strengthened. 

Lawrence’s accepted Jesus Christ as Lord and Savior as a junior in college while attending Chinese Christian Church of Baltimore.  As a new believer, his relationship with God grew through the discipleship with a group of brothers in the Navigators.  Prior to coming to Ambassador, his family attended the Chinese Church of Maryland in Rockville where he served in various ministries including small group leader, Sunday school teacher, Young Adults Fellowship, and as a Missions deacon.