Seunghyun was born in Seoul, South Korea and was brought up in Christian family. He and his wife, Yujin, came to the United States three weeks after their wedding in 2000. He studied applied mathematics at Georgia Tech and works at SAS Institute. They have three children: Lynn (11), Olivia (9), and Ian (6).
They were first introduced to RUF-International at Georgia Tech and attended a PCA church while living in Atlanta. They joined Trinity Park when it was a church plant with many other families. Seunghyun has been serving as an elder since 2013. He has a passion for educating covenant children.
He enjoys reading books about church history and culture. His favorite authors are D. A. Carson, George Marsden, and Francis Schaeffer.