Samuel did not yet know the because he had never had a message from the before.
So the called a third time, and once more Samuel got up and went to Eli. “Here I am. Did you call me?” Then Eli realized it was the who was calling the boy.
So he said to Samuel, “Go and lie down again, and if someone calls again, say, ‘Speak, , your servant is listening.’” So Samuel went back to bed.