Callistus I of Rome

“Let no one speak deceitfully to his neighbor. The mouth of the malevolent is a deep pit. The innocent person, while he believes easily, falls readily; but though he falls, he rises; and the shuffler, with all his arts, goes headlong to ruin, from which he can never rise or escape. Therefore let everyone weigh well his words, and let him not say to another what he would not say to himself.”

“People are in error who think that the priests of the Lord, after a lapse, although they may have exhibited true repentance, are not capable of ministering to the Lord and engaging their honorable offices, even though they may lead a good life thereafter and perform their priesthood correctly. Individuals who hold this opinion are not only in error but also seem to argue and act in opposition to the power of the keys committed to the church, of which it is said, "Whatever you shall loose on earth shall be loosed in heaven." In short, this opinion either is not the Lord's or it is true. Be that as it may, we believe without hesitation that both the priests of the Lord and other believers may return to their place of honor after a proper satisfaction for their error, as the Lord testifies through his prophet: "Shall he who falls not also rise again? and shall he who turns away not return?" In another passage the Lord says, "I desire not the death of the sinner, but that he may turn and live." The prophet David, on his repentance, said, "Restore to me the joy of your salvation, and uphold me with your free Spirit." And he indeed, after his repentance, taught others also and offered sacrifice to God, giving thereby an example to the teachers of the holy church, that if they have fallen and thereafter have exhibited a right repentance to God, they may do both things in like manner. For he taught when he said, "I will teach transgressors your ways, and sinners will be converted to you." And he offered sacrifice for himself when he said, "The sacrifice for God is a broken spirit." For the prophet, seeing his own transgressions purged by repentance, had no doubt as to healing those of others by preaching and by making offering to God. Thus the shedding of tears moves the mind's feeling (passionem). And when the satisfaction is made good, the mind is turned aside from anger. For how does that person think that mercy will be shown to himself, who does not forgive his neighbor? If offences abound, then, let mercy also abound; for with the Lord there is mercy, and with him is plentiful redemption.”

“For the apostle says: "All have sinned, and come short of the glory of God; being justified freely by His grace, through the redemption that is in Jesus Christ: whom God hath set forth to be a propitiation through faith in His blood, to declare His righteousness for the remission of sins that are past, through the forbearance of God; to declare, `I say, 'at this time His righteousness, that He might be just, and the justifier of him which believeth in Jesus."”

“For we need time to do anything perfectly (maturius); and let us not be precipitate in our counsels or our works, neither let us violate order. But if any one has fallen in anything, let us not consign him to ruin; but let us reprove him with brotherly affection, as the blessed apostle says: "If a man be overtaken in any fault, ye which are spiritual restore such an one in the spirit of meekness; considering thyself, test thou also be tempted. Bear ye one another's burden, and so will ye fulfil the law of Christ."”