He has advocated for Evangelical Christian support for same-sex couples since his graduate student days in InterVarsity at USC in 1962 and then, on InterVarsity staff at Penn in 1964. In 1971, after serving as a Director of Counseling in The City University of New York, he founded The Homosexual Community Counseling Center in New York City and, in 1973, The Homosexual Counseling Journal. In 1975, he founded Evangelicals Concerned.