1 Samuel 3:6-8

6Then the Lord called out again, “Samuel!” Again Samuel got up and went to Eli. “Here I am. Did you call me?” “I didn’t call you, my son,” Eli said. “Go back to bed.”

7Samuel did not yet know the Lord because he had never had a message from the Lord before.

8So the Lord 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 Lord who was calling the boy.