1 Samuel 3:4-6, 8, 16

that the LORD called Samuel; and he said, “Here I am.” Then he ran to Eli and said, “Here I am, for you called me.” But he said, “I did not call, lie down again.” So he went and lay down. The LORD called yet again, “Samuel!” So Samuel arose and went to Eli and said, “Here I am, for you called me.” But he answered, “I did not call, my son, lie down again.”

So the LORD called Samuel again for the third time. And he arose and went to Eli and said, “Here I am, for you called me.” Then Eli discerned that the LORD was calling the boy.

Then Eli called Samuel and said, “Samuel, my son.” And he said, “Here I am.”