In his 1532 Commentary on the Sermon of the Mount, Martin Luther criticized Catholic doctrine concerning condign merit. He noted that while the reward one gains from condign merit is much greater than that of congruent merit, the sort of good works said to attain each type of merit is similar. Luther thought it did not make sense that the two types of merit could be gained by similar actions when the benefit of condign merit is so much greater than the benefit of congruent merit. Commentary on the Sermon on the Mount translated by Charles A. Hay, 1892, page 97
