Thomas Boston, Works, 1:119:
Is God infinitely just? Then the salvation of sinners who have believed in Christ is most secure, and they need not doubt of pardon and acceptance. “God is faithful and just to forgive them their sins,” 1 John 1:9. God hath promised it, and he will not break his word. Yea, he stands bound in justice to do it; for Christ hath satisfied his justice for all your sins who are believers, so that it hath nothing to crave of you. It doth not stand with the justice of God to exact the same debt from you. Your Redeemer did not only satisfy justice, but also merited the exercise of it on your behalf. Hence it is that God is bound in justice to justify you upon your believing on Christ; for he is just, and the justifier of him that believeth in Jesus, Rom. 3:26. So that the thoughts even of divine justice, which are terrible to others, may be comfortable to believers.
Is God infinitely just? Then the salvation of sinners who have believed in Christ is most secure, and they need not doubt of pardon and acceptance. “God is faithful and just to forgive them their sins,” 1 John 1:9. God hath promised it, and he will not break his word. Yea, he stands bound in justice to do it; for Christ hath satisfied his justice for all your sins who are believers, so that it hath nothing to crave of you. It doth not stand with the justice of God to exact the same debt from you. Your Redeemer did not only satisfy justice, but also merited the exercise of it on your behalf. Hence it is that God is bound in justice to justify you upon your believing on Christ; for he is just, and the justifier of him that believeth in Jesus, Rom. 3:26. So that the thoughts even of divine justice, which are terrible to others, may be comfortable to believers.
