John was born in South Korea in 1972, and grew up in the US since he was six months old. He placed his faith in Jesus as his Savior early in his childhood. Growing up, he always sensed a divine purpose for his life. At the age of 13, God revealed to him His plan to use him to teach God’s Word to others. Doors began to open; John began to teach, and he continues to teach today.

Since graduating from high school, he has been serving Christ in full-time ministry. He ministered as a missionary in Austria, Hungry, and England, as well as an assisting pastor at Calvary Chapel Costa Mesa, Calvary Chapel San Diego, and Calvary Chapel Corvallis. God also used him to plant Calvary Chapel Monmouth-Independence, OR, and to serve as its pastor for two years.

In the summer of 2002, at the age of 30, God directed John to Brazil with the calling and vision of a church-planter. In 2003, God used him to plant Igreja Vivendo em Cristo in Curitiba. In 2005, he moved to Campo Mourão to become the director of the Calvary Chapel Bible College | Brazil and establish Calvary Chapel of Campo Mourão. In 2007, he returned to Curitiba to establish and serve as the pastor of Calvary Curitiba. In 2012, after ten years in Brazil, God redirected him back to the US.

Currently, John and his family are residing in Southern California, attending Calvary Chapel Costa Mesa. He serves as the Dean of Calvary Chapel Bible College | Costa Mesa.