This study reports results from in-depth interviews with 57 highly religious middle-aged married couples representing the major Abrahamic faiths (Christianity, Judaism, Islam) and residing in New England and Northern California. The study uses grounded theory methods to create themes that describe the ways that religiosity influences marital commitment. Couples reported that religious beliefs and practices helped them include God as the third partner in their marriage, believe in marriage as a religious institution that lasts, and find meaning in committing to marriage.