Albert Barnes Commentary Judges 5:2

"For that the leaders took the lead in Israel, For that the people offered themselves willingly, Bless ye Jehovah." — Judges 5:2 (ASV)

Render For the leading of the leaders in Israel (the princes), for the willingness of the people (to follow them) bless ye the Lord. See (Deuteronomy 32:42) note, and compare (Judges 5:9) and (Judges 5:13), where the nobles and the people are again contrasted.