They argued that before a man received an infusion of grace, man must do his best in a state of nature (i.e. based on man's reason and inborn moral sense). They argued that just as God awards eternal life on the basis of man's condign merit for doing his best to do good works after receiving faith as a gift from God, so too, the original infusion of grace was given to man on the basis of "congruent merit", a reward for man's doing his best in a state of nature. (Unlike condign merit, which is fully deserved by man, congruent merit is not fully deserved, and includes a measure of grace on God's part.