After being cleansed in the laver of regeneration, strengthened by the Holy Ghost, and fed with the body and blood of Christ, man would seem to need no further aids to secure his salvation. But his will is free; his flesh, since the Fall, is weak. He is therefore able and inclined to transgress. God, too, on His side, for His own wise purposes, permits sin to take place (supra, § 159). But He does not leave man helpless. “As a father hath compassion on his children, so hath the Lord compassion on them that fear Him; for He knoweth our frame, He remembereth that we are dust. He forgiveth all” our “iniquities, He healeth all our diseases” (Ps. 102:13, 3); “As I live, saith the Lord God, I desire not the death of the wicked, but that the wicked turn from his way and live” (Ezech. 33:11). Sins committed after baptism do not altogether undo the work of that sacrament. The original sin cannot return; the baptized sinner does not cease to be a Christian and a member of the Church. It is not fitting, therefore, that these sins should be remitted by a repetition of baptism, even if that were possible. Hence our Divine Lord instituted a special sacrament—Penance—for the forgiveness of sins committed after baptism. See St. Thomas, 3, qq. 84–90: Suppl., qq. 1–28, with the commentaries; Bellarmine, Controv. iv.; Chardon, Hist. des Sacrements; De Augustinis, De Re Sacrameutaria, lib. iii.; Faith of Catholics, vol. iii.