What does Judges 5:31 mean?
Deborah's victory song (Judges 5:1) ends with a prayer to the Lord. She returns to her emphasis that this triumph was God's. He brought it about, from the deluge that flooded the river and rendered Sisera's iron chariots helpless (Judges 5:19–22) to the grotesque way in which Sisera died at the hands of a woman used by the Lord to bring justice (Judges 5:24–27).The prophetess (Judges 4:4–5) concludes by asking the Lord to bring such death to all His enemies. She doesn't call them "her" enemies or even "Israel's" enemies, but God's enemies. He brings justice to those who stand opposed to Him. In the same way, she asks the Lord that those who honor Him be like the sun: rising in might, bringing heat and light while remaining untouchable.
Within Deborah's words are echoes of God's own covenant promises to Israel. These were made exclusively to that people, in that time. If they will remain His friends by doing what is right before Him, He will bless them. If they choose to rebel against Him and make themselves His enemies once more, He will bring suffering and death (Deuteronomy 30:15–18). Sadly, the next verse reveals the choice Israel will make, once more, to continue the downward spiral of the book of Judges (Judges 2:11–19).
The last phrase of this verse is not part of Deborah's song. Rather, it's the conclusion of this cycle in Israel's history. After the defeat of Canaan, Sisera, and Jabin (Judges 4:1–3), Israel will see peace for an entire generation: forty years. Then the pattern will repeat (Judges 6:1).