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.