Immediately after his arrival, Revel enrolled in New York's
RIETS yeshiva. He received a Master of Arts degree from
New York University in 1909. Around this time, one of America's senior rabbis and president of the
Union of Orthodox Rabbis, Rabbi Bernard Levinthal of
Philadelphia, visited the yeshiva and, after discussing
Talmudic topics with the new student, invited him to come to Philadelphia as the rabbi's secretary and assistant. Revel accepted the post and began to familiarise himself with the alien milieu of American Jewry. At the same time, he began attending law school in Philadelphia, but eventually decided that the law was not his calling. In 1911, he earned a doctorate of philosophy from
Dropsie College, the first graduate of that school; his thesis was entitled "The Karaite Halakhah and Its Relation to Sadducean, Samaritan, and Philonian Halakhah". In November 1908, Revel was introduced to his future wife, Sarah Travis of
Marietta,
Ohio, whom he married in 1909. The members of the Travis family were wealthy
Oklahoma oil-men, and Rabbi Revel moved to
Tulsa, Oklahoma to join the family business after finishing his doctorate. However, even while serving as an assistant to his brother-in-law Solomon in the petroleum business, and amassing his own fortune, Rabbi Revel's primary occupation continued to be his Torah study. ==RIETS and Yeshiva College==