I Samuel 3:3-9
The lamp of God had not yet gone out, and Samuel was lying down in the temple of the Lord, where the ark of God was. Then the Lord called Samuel. Samuel answered, “Here I am. And he ran to Eli and said, “Here I am; you called me”. But Eli said, But Eli said, “I did not call; go back and lie down.” So he went back and lay down. (This happen for the second time) The Lord called Samuel for a third time, and Samuel got up and went to Eli and said, “Here I am; you called me.” Then Eli realized that the Lord was calling the boy. So Eli told Samuel, “Go and lie down, and if he call you, say, “Speak Lord, for your servant is listening.” And so he did.

The moment you establish friendship with The Father, his voice will be as clear as the voice of your best friend=LISTEN