Chairman,
World Vision International

Global Ambassador,
World Evangelical Alliance

Pastoral Supervisor,
City Harvest Church

Director,
Asia Pacific Research Center,
Asia Pacific Theological Seminary

Professor of Systematic Theology,
The Theological School of Finland

Professor of Christian Theology and Pentecostal Studies,
University of Birmingham

Director,
Pentecostal Research Centre,
Satyabhaki Theological College

Director,
Malaysia Pentecostal Research Centre,
Bible College of Malaysia

Professor, Fuller Theological Seminary