1 Samuel 17:31-33

Young's Literal Translation

³¹ And the words which David hath spoken are heard, and they declare before Saul, and he receiveth him;

³² and David saith unto Saul, `Let no man's heart fall because of him, thy servant doth go, and hath fought with this Philistine.'

³³ And Saul saith unto David, `Thou art not able to go unto this Philistine, to fight with him, for a youth thou [art], and he a man of war from his youth.'