One Mission Society missionaries since 1979, John-Mark currently serves as international regional director (IRD) for OMS Asia Pacific. In this role, John-Mark travels to the 16 countries of the Asia/Pacific region, giving vision, leadership, and encouragement, as well as ministering to missionaries and national leaders. Susan serves as assistant IRD, church multiplication facilitator for two countries in Asia, and as founding director of Dynamic Women in Missions writes e-devotionals for them. John-Mark and Susan also travel in the region preaching, teaching, and training in church multiplication strategy. They reside in Taichung, Taiwan.

The Brabons worked as Development officers from 2006 to 2008. John-Mark concentrated on funding for SEMBIMEX (The Biblical Seminary of Mexico) with the Empowering Leaders for Life initiative. Susan began the ministry of Dynamic Women with the purpose of challenging women to be more involved in the Great Commission. In 2013, she completed a master of arts in theological studies at Asbury Theological Seminary.

John-Mark and Susan served in Mexico City from July 1993 until July 2005. John-Mark was field director from July 1993 until June 2006, overseeing all the ministries and personnel, directing and teaching in SEMBIMEX for a short time, and serving as the senior pastor of the Campanario Encounter with God Cell Church from May 1999 until August 2007. Susan started and directed the cell group ministry of the church, training leaders for five years prior to turning leadership over to Mexicans she had trained. She was also active in women’s discipleship. Susan is the founder of Mexico City Christian Academy, which meets the educational needs of missionary children from various mission-sending organizations.

John-Mark and Susan began their missionary service in South Korea as teachers at Seoul Foreign School. Upon completion of their first term, the Brabons moved to Wilmore, Kentucky, where John-Mark earned a master of divinity degree from Asbury Theological Seminary in 1985. While attending seminary, John-Mark and Susan also directed the OMS Student Center for Asbury College and Seminary. The Brabons are both graduates of Asbury College with B.A. degrees in education.

Upon completion of studies at Asbury Seminary and language school in Costa Rica, the Brabons moved to Guayaquil, Ecuador, where John-Mark served as a professor and president of the Evangelical Bible Seminary. He was also the pastor of training on the Encounter with God church-planting team. Susan directed the Christian education program.

The Brabons have four children: Christel is an OB/GYN doctor, serving at the Oasis Hospital in the UAE. Suzannah is married to Johnathan Jording (a graduate of Asbury Theological Seminary), and they have two daughters. Suzannah works with the Communications Department of OMS, and she and John are funding to serve in the South Pacific. Melissa, also a graduate of ATS, teaches Bible and Spanish at Morrison Academy in Kaohsiung. Scott, married to Heather, works as a mechanical engineer for an engineering company.