Psalms 78:8

"That they might not become like their fathers." That they might not murmur, as certain ones murmured in the desert and perished; that they might not murmur thus like the Jews, and perish in the desert. "A generation crooked and provoking." It is not I who say this: your own prophet says this about you. "A generation crooked and provoking." "An adulterous and most wicked generation seeks a sign, and a sign shall not be given to it, except the sign of Jonah." Why did he say "crooked"? "Because they were turned into a crooked bow." For a bow is never drawn against the one who shoots it, but against the adversaries. But this generation, though it had been created upright by God, and was held in the hand of God like a bow, so that he might shoot arrows through it, was turned like a crooked bow, blaspheming against their Creator. "A generation which did not direct its heart." To this day Israel is crooked. "And its spirit was not directed with God." Since it did not receive the Son, therefore it did not receive the Holy Spirit. Indeed, the Holy Spirit, when it descended in the likeness of a dove, did not descend upon the crowds of the Jews, but upon the one Jesus. If, then, you wish, O Jew, to receive the Spirit, believe in Jesus: since the Holy Spirit rests upon Jesus.

"That they may not become, like their fathers, a crooked and embittering generation: a generation that hath not guided their heart, and the spirit thereof hath not been trusted with God" (ver. 8). These words do point out two peoples as it were, the one belonging to the Old Testament, the other to the New: for in that he saith, he hath implied that they received the commandments, "to make them known to their sons," but that they did not know or do them: but they received them themselves, to the end "that another generation might know," what the former knew not. "Sons who shall be born and shall arise." For they that have been born have not arisen: because they had not their heart above, but rather on the earth. For the arising is with Christ: whence hath been said, "If ye have arisen with Christ, savour ye the things which are above." ..."And may not forget the works of God:" that is to say, in magnifying and vaunting their own works, as though they did them themselves; while "God it is that worketh," in them that work good things, "both to will and to work according to good will." "And may search out His commandments." ...The commandments which He hath commanded. How then should they still search out, whereas they have already learned them, save that by putting their hope in God, they do then search out His commandments, in order that by them, with His aid, they may be fulfilled? And he saith why, by immediately subjoining, "and its spirit hath not been trusted with God," that is, because it had no faith, which doth obtain what the Law doth enjoin. For when the spirit of man doth work together with the Spirit of God working, then there is fulfilled that which God hath commanded: and this doth not come to pass, except by believing in Him that doth justify an ungodly man. Which faith the generation crooked and embittering had not: and therefore concerning the same hath been said, "The spirit thereof hath not been trusted with God." For this hath been said much more exactly to point out the grace of God, which doth work not only remission of sins, but also doth make the spirit of man to work together therewith in the work of good deeds, as though he were saying, his spirit hath not believed in God. For to have the spirit trusted with God, is, not to believe that his spirit is able to do righteousness without God, but with God. For this is to believe in God:…