1 Samuel 17:29-32

29“Now what have I done?” said David. “Can’t I even speak?” 30He then turned away to someone else and brought up the same matter, and the men answered him as before.

31What David said was overheard and reported to Saul, and Saul sent for him.

32David said to Saul, “Let no one lose heart on account of this Philistine; your servant will go and fight him.”