Judges 7

"The Lord said to Gideon, 'You have too many warriors with you. If I let all of you fight the Midianites, the Israelites will boast to me that they saved themselves by their own strength.'"v.2
Self-sufficiency is an handicap when it causes us to believe we can do what needs to be done in our own strength. To prevent this attitude among Gideon's soldiers, God reduced their number from 32,000 to 300. With an army this vastly outnumbered, there could be no doubt that victory was from God. The men could not take credit. Like Gideon, we must recognize the danger of fighting in our own strength. We can be confident of victory against life's challenges and temptations only if we put our confidence in Gods and not ourselves.

Taken from the NLT Life Application Study Bible