Thou shalt heap coals of fire upon his head - Not to consume, but to melt him into kindness; a metaphor taken from smelting metallic ores: -

So artists melt the sullen ore of lead,

By heaping coals of fire upon its head:

In the kind warmth the metal learns to glow,

And pure from dross the silver runs below.

S. Wesley.

For thou shall heap coals of fire upon his head,.... Not to increase his punishment and damnation, the more aggravated by kindness shown him; but to bring him by such means to a sense of former injuries, and to shame for them, repentance of them, and love of the person injured, and carefulness for the future of doing him any further wrong;

and the Lord shall reward thee: with good things, for all the good done to thine enemy, whether it has the desired effect on him or not; or whether he rewards thee or not; see Romans 12:20.

For thou shalt heap {p} coals of fire upon his head, and the LORD shall reward thee.

(p) You will, as if by force, overcome him, in so much that his own conscience will move him to acknowledge the benefits, and his heart will be inflamed.

25:22 For - In so doing, which words are expressed Rom 12:20, where this text is quoted. Thou shalt melt him into repentance, and love.

25:19. Confidence in an unfaithful man is painful and vexatious; when we put any stress on him, he not only fails, but makes us feel for it. 20. We take a wrong course if we think to relieve those in sorrow by endeavouring to make them merry. 21,22. The precept to love even our enemies is an Old Testament commandment. Our Saviour has shown his own great example in loving us when we were enemies. 23. Slanders would not be so readily spoken, if they were not readily heard. Sin, if it receives any check, becomes cowardly. 24. It is better to be alone, than to be joined to one who is a hinderance to the comfort of life. 25. Heaven is a country afar off; how refreshing is good news from thence, in the everlasting gospel, which signifies glad tidings, and in the witness of the Spirit with our spirits that we are God's children! 26. When the righteous are led into sin, it is as hurtful as if the public fountains were poisoned. 27. We must be, through grace, dead to the pleasures of sense, and also to the praises of men. 28. The man who has no command over his anger, is easily robbed of peace. Let us give up ourselves to the Lord, and pray him to put his Spirit within us, and cause us to walk in his statutes.