Thomas Aquinas

“ Now by Christ's Passion we have been delivered not only from the common sin of the whole human race, both as to its guilt and as to the debt of punishment, for which He paid the penalty on our behalf; but, furthermore, from the personal sins of individuals, who share in His Passion by faith and charity and the sacraments of faith. Consequently, then the gate of heaven's kingdom is thrown open to us through Christ's Passion. ”

“ The devil is said to have had such power over men not as though he were able to injure them without God's sanction, but because he was justly permitted to injure men whom by tempting he had induced to give consent.
Reply to Objection 2: God so permitting it, the devil can still tempt men's souls and harass their bodies: yet there is a remedy provided for man through Christ's Passion, whereby he can safeguard himself against the enemy's assaults, so as not to be dragged down into the destruction of everlasting death. ”

“ It would seem that we were not reconciled to God through Christ's Passion. For there is no need of reconciliation between friends. But God always loved us, according to Wis. 11:25: "Thou lovest all the things that are, and hatest none of the things which Thou hast made." Therefore Christ's Passion did not reconcile us to God.
Objection 2: Further, the same thing cannot be cause and effect: hence grace, which is the cause of meriting, does not come under merit. But God's love is the cause of Christ's Passion, according to Jn. 3:16: "God so loved the world, as to give His only-begotten Son." ”

“ But it is by charity that we procure pardon of our sins, according to Lk. 7:47: "Many sins are forgiven her because she hath loved much." Secondly, Christ's Passion causes forgiveness of sins by way of redemption. For since He is our head, then, by the Passion which He endured from love and obedience, He delivered us as His members from our sins, as by the price of His Passion: in the same way as if a man by the good industry of his hands were to redeem himself from a sin committed with his feet. ”

“ For, just as the natural body is one though made up of diverse members, so the whole Church, Christ's mystic body, is reckoned as one person with its head, which is Christ. Thirdly, by way of efficiency, inasmuch as Christ's flesh, wherein He endured the Passion, is the instrument of the Godhead, so that His sufferings and actions operate with Divine power for expelling sin. ”

“ The source of meriting comes of the soul, while the body is the instrument of the meritorious work. And consequently the perfection of Christ's soul, which was the source of meriting, ought not to be acquired in Him by merit, like the perfection of the body, which was the subject of suffering, and was thereby the instrument of His merit.
Reply to Objection 2: Christ by His previous merits did merit exaltation on behalf of His soul, whose will was animated with charity and the other virtues ”

“ Hence no punishment of satisfaction is imposed upon men at their baptism, since they are fully delivered by Christ's satisfaction. But because, as it is written (1 Pet. 3:18) , "Christ died" but "once for our sins," therefore a man cannot a second time be likened unto Christ's death by the sacrament of Baptism. Hence it is necessary that those who sin after Baptism be likened unto Christ suffering by some form of punishment or suffering which they endure in their own person ”

“ Now there is a twofold sin which prevents men from entering into the kingdom of heaven. The first is common to the whole race, for it is our first parents' sin, and by that sin heaven's entrance is closed to man. ”

“ Further, the devil exercises his power over men by tempting them and molesting their bodies. But even after the Passion he continues to do the same to men. Therefore we are not delivered from his power through Christ's Passion. ”

“ Elias was taken up into the atmospheric heaven, but not in to the empyrean heaven, which is the abode of the saints: and likewise Enoch was translated into the earthly paradise, where he is believed to live with Elias until the coming of Antichrist. ”

“ And he is said to deserve it, inasmuch as his unjust will is chastised thereby. So likewise when any man through his just will has stripped himself of what he ought to have, he deserves that something further be granted to him as the reward of his just will. ”