1 Samuel 3:6-9

6Once again the Lord called, “Samuel!” Samuel got up, went to Eli, and said, “Here I am; you called me.” “I didn’t call, my son,” he replied. “Go back and lie down.”

7Now Samuel did not yet know the Lord, because the word of the Lord had not yet been revealed to him.

8Once again, for the third time, the Lord called Samuel. He got up, went to Eli, and said, “Here I am; you called me.” Then Eli understood that the Lord was calling the boy.

9He told Samuel, “Go and lie down. If he calls you, say, ‘Speak, Lord, for your servant is listening.’” So Samuel went and lay down in his place.