George Haydock's Catholic Commentary
Psalms 9:31
or Hebrew Psalm x. Ver. 10. Fall. Protestants, " and humbleth himself, that the poor may fall by his strong ones." (Haydock) --- He imitates the lion in the fable, which feigned sickness. (Horace, ep.) --- But the Vulgate gives a better sense. (Calmet) --- "He will bring under the broken, (poor) and will rush on violently with all his power." St. Jerome here explains chelecaim, valenter, instead of "the poor;" (Haydock) as some of the Greek interpreters must have done, if it be true that his version is formed on the plan of the Hexapla, of a mere selection from Aquila, Symmachus, and Theodotion, as Houbigant asserts, (Pref.) in order to confute the Jews. (Haydock)