Hugh Binning, Works, p. 324:
Herein is the wonder of the grace of God increased, that when we are under an obligation to infinite punishment for sin, and bound guilty before his justice, that the “most great and potent Lord,” who can easily rid himself of all his enemies, and do all his pleasure in heaven and earth, should come under an obligation to man to forgive him his sins. A strange exchange! Man is standing bound by the cords of his own sins over the justice of God, – he is under that insoluble tie of guiltiness. God in the meantime is free, and loosed from the obligation of the first covenant, that is, his promise of giving life to man. We have loosed him from that voluntary engagement, and are bound under a curse. And yet, behold the permutation of grace, – man is loosed from sin, to which he is bound, and God is bound to forgive sin, to which he was not bound. He enters into a new and voluntary engagement by his promise, and gives right to poor creatures to sue and seek forgiveness of him, according to his faithfulness.
Source: https://www.puritanboard.com/threads/behold-the-permutation-of-grace.89480/, Comment 1