Matthew Poole and continuators on 1 John 1:9

9 If we confess our sins , he is faithful just to forgive us our sins, and to cleanse us from all unrighteousness .

But on the contrary, if we apply our selves to him sutably to the Condition of Sinners, confessing our selves such, with that self-abasing sense of Sin, which may dispose us to accept, and apply his offered Remedy, (upon which it is imply'd 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 signifie Goodness, or Clemency, 1 Sam. 12.7. Psal. 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 apply'd, and upon his own Terms to be reckon'd unto us) that he will not fail to forgive us our Sins.

Which may either be added as a further Expression of the same thing; or may, moreover, signifie 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 uncapable of his own holy Communion.

Marginal references: Psal. 32.5. Prov. 28.13.