1 Samuel 3:9

And he said, Return, child, go to sleep; and it shall come to pass if he shall call thee, that thou shalt say, Speak, for thy servant hears: and Samuel went and lay down in his place.

Therefore Eli said unto Samuel, Go, lie down: and it shall be, if he call thee, that thou shalt say, Speak, Lord; for thy servant heareth. So Samuel went and lay down in his place.

Therefore Eli said to Samuel, “Go, lie down. It shall be, if he calls you, that you shall say, ‘Speak, Yahweh; for your servant hears.’” So Samuel went and lay down in his place.