Judges 7:4-7 NIV

[4] But the LORD said to Gideon, “There are still too many men. Take them down to the water, and I will thin them out for you there. If I say, ‘This one shall go with you,’ he shall go; but if I say, ‘This one shall not go with you,’ he shall not go.” [5] So 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.” [6] Three hundred of them drank from cupped hands, lapping like dogs. All the rest got down on their knees to drink. [7] The 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.”