1 John 1:9

But on the contrary, if we confess our sins, if we apply ourselves to him suitably to the condition of sinners, confessing ourselves such, with that self-abasing sense of sin which may dispose us to accept and apply his offered remedy, (upon which it is implied we will do it), he is faithful, so true to his promise, and just, fidelity being a part of justice; or there is with him that equity and righteousness, (which sometimes signify goodness, or clemency, 1 Samuel 12:7 Psalms 112:9, and which, more strictly taken, permit him not to exact from us the satisfaction which he hath accepted in the atonement made by his Son, in his own way applied, and upon his own terms to be reckoned unto us), that he will not fail to forgive us our sins. And to cleanse us from all unrighteousness; which may either be added as a further expression of the same thing; or may, moreover, signify his vouchsafing that purifying influence of the Spirit of Christ, (obtained also by his blood), which shall both purge away, and prevent, the defilements that would render us incapable of his own holy communion.