Biblical theology
The board of trustees of the Reformed Episcopal Seminary elected Rudolph to teach dogmatic theology in 1903. He resigned as Bishop Sabine’s assistant in order to take up the challenge of this new work. Later, he became professor of Biblical theology and Christian ethics. He devoted twenty-seven years of his life to training men for pastoral service, using A.A. Hodge’s "Outlines of Theology", which presents theological topics in question and answer format, to stimulate discussion in the classroom. And to make sure that his students knew the Bible, he required that they read through it in its entirety in two years using James M. Gray’s Biblical Synthesis course.