Psalms 5:8

He, then, who from among the Gentiles and from that old life has betaken himself to faith, has obtained forgiveness of sins once. But he who has sinned after this, on his repentance, though he obtain pardon, ought to fear, as one no longer washed to the forgiveness of sins. For not only must the idols which he formerly held as gods, but the works also of his former life, be abandoned by him who has been “born again, not of blood, nor of the will of the flesh,” but in the Spirit; which consists in repenting by not giving way to the same fault. For frequent repentance and readiness to change easily from want of training, is the practice of sin again. The frequent asking of forgiveness, then, for those things in which we often transgress, is the semblance of repentance, not repentance itself. “But the righteousness of the blameless cuts straight paths,” says the Scripture. …

35. Moreover what is written “Thou wilt destroy all that speak leasing:” one saith that no lie is here excepted, but all condemned. Another saith: Yea verily: but they who speak leasing from the heart, as we disputed above; for that man speaketh truth in his heart, who hateth the necessity of lying, which he understands as a penalty of the moral life. Another saith: All indeed will God destroy who speak leasing, but not all leasing: for there is some leasing which the Prophet was at that time insinuating, in which none is spared; that is, if refusing to confess each one his sins, he defend them rather, and will not do penance, so that not content to work iniquity, he must needs wish to be thought just, and succumb not to the medicine of confession: as the very distinction of the words may seem to intimate no other, “Thou hatest all that work iniquity;” but wilt not destroy them if upon r …

8. “The man of blood, and the crafty man, the Lord will abominate.” What he said above, “Thou hast hated all that work iniquity, Thou wilt destroy all that speak a lie,” may well seem to be repeated here: so that one may refer “the man of blood” to “the worker of iniquity,” and “the crafty man” to the “lie.” For it is craft, when one thing is done, another pretended. He used an apt word too, when he said, “will abominate.” For the disinherited are usually called abominated. Now this Psalm is, “for her who receiveth the inheritance;” and she adds the exulting joy of her hope, in saying, “But I, in the multitude of Thy mercy, will enter into Thine house” ( ver. 7 ). “In the multitude of mercy:” perhaps he means in the multitude of perfected and blessed men, of whom that city shall consist, of which the Church is now in travail, and is bearing few by few. …

Germanus : As far as the force of the words which have been reasonably and carefully considered, is concerned, our scruple about our promise would have easily been removed from us were it not that we were terribly alarmed lest by this example an opportunity for lying might be offered to certain weaker brethren, if they knew that the faith of an agreement could be in any way lawfully broken, whereas this very thing is forbidden in such vigorous and threatening terms by the prophet when he says: “Thou shalt destroy all those who utter a lie;” and: “the mouth that speaketh a lie, shall slay the soul.”

Joseph : All liberty in the matter of wives and many concubines, as the end of time is approaching and the multiplying of the human race completed, ought rightly to be cut off by evangelical perfection, as being no longer necessary. For up to the coming of Christ it was well that the blessing of the original sentence should be in full vigour, whereby it was said: “Increase and multiply, and fill the earth.” And therefore it was quite right that from the root of human fecundity which happily flourished in the synagogue, in accordance with that dispensation of the times, the buds of angelical virginity should spring, and the fragrant flowers of continence be produced in the Church. …