18 And he said to Zebah and Zalmunna, "What kind of men were they whom you killed at Tabor?" So they answered, "As you are, so were they; each one resembled the son of a king." 19 Then he said, "They were my brothers, the sons of my mother. As the Lord lives, if you had let them live, I would not kill you." 20 And he said to Jether his firstborn, "Rise, kill them!" But the youth would not draw his sword; for he was afraid, because he was still a youth. 21 So Zebah and Zalmunna said, "Rise yourself, and kill us; for as a man is, so is his strength." So Gideon arose and killed Zebah and Zalmunna, and took the crescent ornaments that were on their camels' necks.
Matthew Henry's Commentary on Judges 8:18-21
Commentary on Judges 8:18-21
(Read Judges 8:18-21)
The kings of Midian must be reckoned with. As they confessed themselves guilty of murder, Gideon acted as the avenger of blood, being the next of kin to the persons slain. Little did they think to have heard of this so long after; but murder seldom goes unpunished in this life. Sins long forgotten by man, must be accounted for to God. What poor consolation in death from the hope of suffering less pain, and of dying with less disgrace than some others! yet many are more anxious on these accounts, than concerning the future judgment, and what will follow.