1 Samuel 3:7-9

And Samuel hath not yet known Jehovah, and the word of Jehovah is not yet revealed unto him.

And Jehovah addeth to call Samuel the third time, and he riseth and goeth unto Eli, and saith, `Here am I, for thou hast called for me;' and Eli understandeth that Jehovah is calling to the youth.

And Eli saith to Samuel, `Go, lie down, and it hath been, if He doth call unto thee, that thou hast said, Speak, Jehovah, for Thy servant is hearing;' and Samuel goeth and lieth down in his place.