According to the Book of Judges, Zebah and Zalmunna were leaders of a big army with fifteen thousand men left because many of their soldiers had been defeated. This story shows how God helped Gideon and his small army win against a much bigger enemy.
Judges 8:10: Now Zebah and Zalmunna [were] in Karkor, and their hosts with them, about fifteen thousand [men], all that were left of all the hosts of the children of the east: for there fell an hundred and twenty thousand men that drew sword. [men that...: or, every one drawing a sword]
This verse states that safety is of the Lord, contradicting Judges 8:10 where victory is achieved through the outnumbering and defeat of Zebah and Zalmunna’s hosts.
Proverbs 21:31: The horse [is] prepared against the day of battle: but safety [is] of the LORD. [safety: or, victory]