For we know him who said, “Vengeance is mine; I will repay.” And again, “The Lord will judge his people.”” (Hebrews 10:30, ESV)

This shocking verse comes at the end of a short section in which the author of Hebrews warns his readers against those who “go on sinning deliberately after receiving the knowledge of the truth.”  Someone who does this is treating Christ’s incredible gift of suffering and dying for us, of taking our sins on himself at the cross as nothing.  This type of person is an enemy of God.  He will take vengeance against this person.

Louw-Nida defines vengeance as: “to repay harm with harm, on the assumption that the initial harm was unjustified and that retribution is therefore called for.”

In other words, God’s vengeance is one of repaying those who do harm (through sinning deliberately in spite of what they know about Christ’s sacrifice) with harm.  This is a good thing!

Think of it this way, at the end of history either God will win, or his enemies and opponents will win.  Since the two are diametrically opposed to each other, they cannot both win.  When God wins at the end of history [and he most assuredly will win], then he will repay harm with harm because the evil that the enemies of God have done is unjustified and brought very much harm in and to the world.  This is vengeance that is good, just, and right.