1 Samuel 3:7-8

Now Samuel did not yet know the LORD, neither was the word of the LORD yet revealed unto him. {Now...: or, Thus did Samuel before he knew the LORD, and before the word of the LORD was revealed unto him} And the LORD called Samuel again the third time. And he arose and went to Eli, and said, Here {am} I; for thou didst call me. And Eli perceived that the LORD had called the child.