The Lord called Samuel for the third time. Samuel got up and went to Eli and said, “I am here. You called me.” Then Eli realized the Lord was calling the boy.
Samuel did not yet know the Lord, and the Lord had not spoken directly to him yet.
So he told Samuel, “Go to bed. If he calls you again, say, ‘Speak, Lord. I am your servant and I am listening.’ ” So Samuel went and lay down in bed.