Judges 7:5-7

5So Gideon took the men down to the water. There the Lord told him, “Separate those who lap the water with their tongues as a dog laps from those who kneel down to drink.” 6Three hundred of them drank from cupped hands, lapping like dogs. All the rest got down on their knees to drink. 7The Lord said to Gideon, “With the three hundred men that lapped I will save you and give the Midianites into your hands. Let all the others go home.”