Judges 7:2-3

2The Lord said to Gideon, "The people with you are too many for me to give the Midianites into their hand, lest Israel boast over me, saying, 'My own hand has saved me.'

3Now therefore proclaim in the ears of the people, saying, 'Whoever is fearful and trembling, let him return home and hurry away from Mount Gilead.'" Then 22,000 of the people returned, and 10,000 remained.