Judges 7:5-7
So he brought down the people unto the water: and
the Lord said unto Gideon, Every one that lappeth of the water with his
tongue, as a dog lappeth, him shalt thou set by himself; likewise every
one that boweth down upon his knees to drink.
And the number of
them that lapped, putting their hand to their mouth, were three hundred
men: but all the rest of the people bowed down upon their knees to drink
water.
And the Lord said unto Gideon, By the three hundred men
that lapped will I save you, and deliver the Midianites into thine hand:
and let all the other people go every man unto his place.