George Haydock's Catholic Commentary
Psalms 77:39
Flesh. The inferior appetite wars against the spirit, Galatians v. 17., and Matthew xxvi. 41. (Haydock) --- Not, in the ordinary course. This does not contradict the faith of the resurrection, which is elsewhere clearly expressed. (St. Jerome) (Calmet) --- Man may go astray, but cannot be converted by his own efforts, Proverbs ii. 19. (St. Augustine) (Berthier) --- God will never abandon the whole Church. The Jews here mark the middle of the psalter, and the 1263d verse, (Worthington) or the division of the book. (Haydock)