At that time, to encourage Rudolph to learn English, the family joined the First Reformed Episcopal Church pastored by the Rev.
That same year he traveled to Erlangen, Germany to study under Professor Theodor Zahn, the leader in conservative New Testament scholarship at the time.
Rudolph first served as coadjutor of the New York and Philadelphia Synod before succeeding Bishop Sabine to the bishopric upon the latter’s death in 1913.
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.
The seminary granted Rudolph a sabbatical for the academic year 1930–31 to study abroad, but he died at his summer home in Dorset, VT, on September 16, 1930, before he was scheduled to leave.