Proverbs 25:22

For, understand, in so doing, which words are expressed Romans 12:20, where this text is quoted, thou shalt heap coals of fire upon his head; either,

1. In a bad sense, thou shalt hereby aggravate his sin, and occasion a more speedy and grievous vengeance from God, which, like fire from heaven, shall fall upon his head and consume him. Not that he persuades him to do a kindness with an evil intent, with an expectation, or desire, or design of bringing God's wrath upon him; but only he foretells what would happen, and dissuades him from taking vengeance, and provokes him to kindness instead of it, because vengeance is God's peculiar work, which he will certainly inflict upon such persons; which argument is used to that very purpose by St. Paul, Romans 12:19. Or,

2. In a good sense, thou shalt melt him into repentance, and inflame him with love and kindness to thee for so unexpected and undeserved a favour; he shall be as heartily grieved and tormented with the thoughts of his vile and wicked carriage to thee, as a man would be that had burning coals of fire heaped upon his head. But if these coals of fire do not melt him, but still he hardens his heart against thee, they will consume him. Thus either by the one or by the other way thou shalt be secured and delivered from him. The metaphor may seem to be taken from founders, who melt the hardest metals by heaping coals of fire upon them. And the head may be here mentioned rather than any other part, because in Scripture phrase both blessings and curses are said to fall upon men's heads, i.e. upon them, heads being frequently put for persons. The Lord shall reward thee; thy charity to him shall be fully recompensed to thee, if not by him, yet by God, which is far better.