In response to a recent article by Robert Doran, this article compares and contrasts the systematic coherence of Karl Rahner and Bernard Lonergan-how they interrelate the divine mysteries of the Trinity, incarnation, grace, and beatific vision. It argues that on all grounds Lonergan's position provides a more satisfying response to relating these mysteries to one another than does Rahner's. It also examines the possible origins of Lonergan's four-point hypothesis.