2 Corinthians 4:1

Paul attributes his perseverance not to human merit but to the mercy of God, which first cleanses a person, then makes him righteous, adopts him as a son of God and endows him with a glory like the glory of God's own Son.

For what kind (of hypothesis) is it, that the very moment after making a largess of restoration to the privileges of ecclesiastical peace to an incestuous fornicator, he should forthwith have proceeded to accumulate exhortations about turning away from impurities, about pruning away of blemishes, about exhortations to deeds of sanctity, as if he had decreed nothing of a contrary nature just before? Compare, in short, (and see) whether it be his province to say, "Wherefore, having this ministration, in accordance with (the fact) that we have obtained mercy, we faint not; but renounce the secret things of disgrace," who has just released from condemnation one manifestly convicted of, not "disgrace" merely, but crime too: whether it be province, again, to excuse a conspicuous immodesty, who, among the counts of his own labours, after" straits and pressures," after" fasts and vigils," has named "chastity" also: whether it be, once more, his province to receive back into communion whatsoever reprobates, who writes, "For what society (is there) between righteousness and iniquity? what communion, moreover, between light and darkness? what consonance between Christ and Belial? or what part for a believer with an unbeliever? or what agreement between the temple of God and idols? "Will he not deserve to hear constantly (the reply); "And in what manner do you make a separation between things which, in the former part of your Epistle, by restitution of the incestuous one, you have joined? For by his restoration to concorporate unity with the Church, righteousness is made to have fellowship with iniquity, darkness has communion with light, Belial is consonant with Christ, and believer shares the sacraments with unbeliever.

Seeing he had uttered great things and had set himself and all the faithful before Moses, aware of the height and greatness of what he had said, observe how he moderates his tone again. For it was necessary on account of the false Apostles to exalt his hearers also, and again to calm down that swelling; yet not to do it away, since this would be a trifler's part. Wherefore he manages this in another manner, by showing that not of their own merits was it, but all of the loving-kindness of God. Wherefore also he says, "Therefore seeing we have this ministry." For nothing more did we contribute, except that we became ministers, and made ourselves subservient to the things given by God. Wherefore he said not 'largess,' nor 'supply,' but 'ministry.' Nor was he contented with this even, but added, "as we obtained mercy." For even this itself, he saith, the ministering to these things, is of mercy and loving-kindness. Yet it is mercy's to deliver from evils, not to give so many good things besides: but the mercy of God includes this also. "We faint not." And this indeed is to be imputed to His loving-kindness. For the clause, "as we obtained mercy," take to be said with reference both to the "ministry," and to the words, "we faint not." And observe how earnestly he endeavors to lower his own things. 'For,' saith he, 'that one who hath been counted worthy of such and so great things, and this from mercy only and loving-kindness, should show forth such labors, and undergo dangers, and endure temptations, is no great matter. Therefore we not only do not sink down, but we even rejoice and speak boldly.'