숭실대학교
Henry taught as a visiting professor or guest lecturer at colleges, universities, seminaries, and conferences across the United States and around the world, including in Japan, Singapore, India, Liberia, South Korea, Yugoslavia, the Philippines, the Netherlands, and Romania. These institutions include the Asian Center for Theological Studies and Mission, Bethel University (Minnesota), Christian Theological Seminary, Columbia Bible College, Denver Conservative Baptist Seminary, Gordon Divinity School (which is now known as Gordon-Conwell Theological Seminary), Hillsdale College, Hong Kong Baptist College (which is now called Hong Kong Baptist University), Latin American Theological Seminary, Soongsil University, Eastern Baptist Theological Seminary (now renamed as Palmer Theological Seminary), The Southern Baptist Theological Seminary, Trinity Evangelical Divinity School, and Winona Lake Summer School of Theology. He also served as the chairman for international conferences and consultations, including the World Congress on Evangelism in Berlin in 1966.