The foolishness of man perverts his way: and his heart frets against the LORD.
Read Chapter 19
Augustine of Hippo
AD 430
Grace is not bestowed according to human merits; otherwise grace would be no longer grace. For grace is so designated because it is given gratuitously.
Fretteth. Literally, "burneth. "Septuagint, "blameth. "Hebrew, "his heart rageth against the Lord. "(Haydock)
Thus Adam tacitly laid the blame on him, as all those do who excuse themselves on account of their temper, habits, stars, the violence of temptation (Calmet)