What does Judges 5:8 mean?
In this passage, Deborah's song (Judges 5:1) mourns for the troubling period under the oppression of Sisera and the Canaanites (Judges 4:1–3). These are the days out of which God called her to be His spokesperson to Israel (Judges 4:4–5; 5:6–7).This subjugation did not happen at random, or for no reason. Israel's suffering happened when they chose to abandon the Lord God and serve new, false gods. Deborah describes Israel's rejection of the Lord and worship of idols like Baal. That evil provoked God to subject His people to the Canaanites (Judges 2:12–15).
The inevitable consequence of Israel's unfaithfulness was victory by the enemy: war, leading to defeat and enslavement of the people. In poetic language—likely exaggerated for effect—Deborah's song says that for twenty years, there wasn't a single implement of war to be found among 40,000 Israelites. The Canaanites had completely disarmed them and left the Lord's people at their mercy.