George Haydock's Catholic Commentary
Psalms 77:72
Skilfulness. Literally, "intelligences." Plural words are used to express the greatness of the thing. David was very upright and intelligent. (Haydock) --- This enhances the ingratitude of Ephraim, &c., who divided the kingdom. (Calmet) --- Yet David had fallen into some grievous mistakes, so that this can only belong strictly to Jesus Christ, who is the good shepherd, without sin. (Berthier) --- He has here detailed what may serve to illustrate the law and the gospel, and may fill us either with confidence or with alarm. (Haydock) --- We are astonished at the repeated infidelities of the Israelites. But if three million Christians were placed in the same circumstances, would they behave better? (Berthier)