Our Speakers

Lawrence Tong

International Director, OM

Lawrence Tong was appointed the International Director of Operation Mobilisation (OM) in 2013. Lawrence visited the OM ship, Logos, in Singapore in 1974 and subsequently joined the ministry team on OM’s second ship, Doulos, in 1978. Lawrence graduated from Biola University (Southern California) with a degree in Communications. He also holds a Master’s degree in Business Administration from the University of LaVerne (California). Lawrence’s leadership journey in OM has included serving on the Board of OM Singapore, as OM country leader for Taiwan, as Director of OM’s third ship, Logos II as well as in financial development with the OM Ships office in Florence, South Carolina. He is also recognised to have led the fast‐ growing work of OM in China with a significant focus on welfare and agricultural programmes. A visionary leader, Lawrence is committed to fostering innovation in world missions, inspiring people to pray, give and go.

Kenneth Bong

Associate Area Director, OM East Asia Pacific

After serving on board an OM ship for 2 years and being OM Singapore’s Executive Director for 15 years, Kenneth became Regional Director of OM South East Asia from 2004 to 2012. He specialises in leadership development, management, planning and strategic thinking. He holds a Master of Theological Studies from Trinity Theological College and a Bachelor’s Degree in Business Administration (National University of Singapore).

Willy Ong

Executive Director, OM Singapore

With a background in Social Work, Business, and IT, Willy has been involved in the non-profit sector of Singapore for more than 10 years, both in the public service and people sector. His family recently served onboard the OM Ship Logos Hope, where Willy took up various roles in directing all public-facing ministries of the ship, managing the sending of 300 ship missionaries to more than 40 countries during the ship’s 6-month generator replacement project, and also running the relief aid and development ministry of Logos Hope. Now back home as the Executive Director of OM Singapore, Willy is still passionate on exploring new ways in which the gospel can reach the world.

Jiamin Choo-Fong

Jiamin Choo
Missions Coordinator, OM Singapore

Jiamin served on board the OM ship Doulos from 2005 to 2009 and wrote “Out of the Harbour”, a book based on her missionary experiences in sharing the Gospel in over 30 countries from 2005 to 2009. She is currently OM Singapore’s Missions Coordinator, engaging churches and individuals in missions and doing missions training. As an itinerant speaker, many are inspired by her messages. She holds a Bachelor’s Degree in Psychology (National University of Singapore) and a Masters of Arts in Biblical Studies (Singapore Bible College).

Dr Ashok Kumar

Missions Trainer and Consultant, OM East Asia Pacific

Ashok has been serving in OM for more than 20 years in India, on board an OM ship and in OM Singapore. A “Licensed Preacher” of the Methodist Church of Singapore, he was the missions coordinator at Bedok Methodist Church for 3 years. He holds a Master of Divinity from A.C.C.S, India; Master of Theology from Trinity Theological College, Singapore and Doctor of Ministry from Gordon Conwell Theological Seminary, USA. Ashok oversees the Hethne Network, a global network which explores ways of bringing the gospel to one of the largest ethnic communities in the world.

I’Ching Thomas

I’Ching Thomas
International Director of Leadership Development, OM International

A Malaysian, I’Ching holds a B.A. in Communications and worked for many years as a marketing and communications consultant before joining OM as a missionary in a Middle Eastern country. In 2004, I’Ching received her M.A. in Christian Apologetics from Biola University California and subsequently joined Ravi Zacharias International Ministries (RZIM) for 10 years as an itinerant apologist and Director of Training for Asia. Besides cultural apologetics, her area of specialty is in the relevance of Christianity in the Eastern cultural context. I’Ching also speaks globally at universities, churches and conferences to help Christians develop a robust understanding and defense of their faith.

Rev Rodney Hui

Rodney Hui
Area Missions Mentor, OM East Asia Pacific

In his 40 years with OM, Rodney has lived in 6 countries and on board 3 OM ships – Logos, Doulos and Logos Hope. After founding OM Singapore, he served as National Director for 10 years.  From 1995 to 2010, he was Area Director, East Asia Pacific. In the last 4 years, he served on the leadership team on board MV Logos Hope. Rodney authored several books, including “Been There, Done That”, “Keep Going” and “The Voyage of the Logos Hope”. He is an ordained minister of the Presbyterian Church in Singapore.

Alvin Tey

Alvin Tey
Executive Director, OM Mercy Teams International

As a church elder, Alvin was involved in missions for more than 10 years as his church partnered with OM’s projects in India. He has a passion for social and economic justice, and holds a Master in Christian Studies from the Biblical Graduate School of Theology. He also holds a BSc (Government and Economics) from London School of Economics, and has held strategic and senior management roles in the public sector and two universities in Singapore, and with a global business consulting firm.

Terence Loke

Area Operations Officer, OM East Asia Pacific

Terence served on board the OM ship Doulos for 2 years and did ministry in over 13 countries. For more than 20 years, he served as the local and regional Personnel Manager, Acting Executive Director and the Executive Director of OM Singapore. Terence specialises in the administrative ministry and is passionate about screening and mentoring individuals who are preparing for missionary service.

Edwin and Mary Koh


For 18 years, Edwin Koh (高瑞秦) and Mary Koh (罗燕怀), together with their three children, were involved in bible distribution, friendship evangelism, and church planting ministries in a least-reached nation. They also initiated a Business as Mission (BAM) platform there and were given the opportunity to pioneer and pastor a mainland Chinese fellowship. Based in OM Singapore now, Edwin is the Local Ministry Team Leader, leading teams to minister to marginalised, least-reached communities in Singapore. Mary is a Missions Mobiliser who seeks to mobilise local Chinese-speaking believers into missions. Both Edwin and Mary have been invited to speak at several churches about ministry and missions in English and Mandarin.

Rev Dr Mike Workman


Rev Dr Mike Workman and his wife, Barbara, joined Operation Mobilisation in 2016 to make the best use of their retirement. They have two adult children, Anna and Peter. Mike came to know Christ while at university. He has a PhD in crop production. His early career was as an oil palm plantation manager in Malaysia, Papua New Guinea, Solomon Islands and Indonesia, and in sugar cane in South Africa. His last job in agriculture was as President Director, PT Asiatic Persada, Jambi, Sumatra. Following that, he was Senior Pastor of St Luke’s Church, Cheltenham, England. Today, Mike serves the Lord passionately, reaching the least reached for Christ among migrant workers and agricultural communities.