1st Samuel 3:4

1 And the child Samuel ministered unto the LORD before Eli. And the word of the LORD was precious in those days; there was no open vision.

2 And it came to pass at that time, when Eli was laid down in his place, and his eyes began to wax dim, that he could not see;

3 And ere the lamp of God went out in the temple of the LORD, where the ark of God was, and Samuel was laid down to sleep;

4 That the LORD called Samuel: and he answered, Here am I.

5 And he ran unto Eli, and said, Here am I; for thou calledst me. And he said, I called not; lie down again. And he went and lay down.

6 And the LORD called yet again, Samuel. And Samuel arose and went to Eli, and said, Here am I; for thou didst call me. And he answered, I called not, my son; lie down again.

7 Now Samuel did not yet know the LORD, neither was the word of the LORD yet revealed unto him.