1 Samuel 17:6-16

6 And he had greaves of bronze upon his legs, and a javelin of bronze slung between his shoulders.
7 And the shaft of his spear was like a weaver's beam, and his spear's head weighed six hundred shekels of iron; and his shield-bearer went before him.
8 He stood and shouted to the ranks of Israel, "Why have you come out to draw up for battle? Am I not a Philistine, and are you not servants of Saul? Choose a man for yourselves, and let him come down to me.
9 If he is able to fight with me and kill me, then we will be your servants; but if I prevail against him and kill him, then you shall be our servants and serve us."
10 And the Philistine said, "I defy the ranks of Israel this day; give me a man, that we may fight together."
11 When Saul and all Israel heard these words of the Philistine, they were dismayed and greatly afraid.
12 Now David was the son of an Eph'rathite of Bethlehem in Judah, named Jesse, who had eight sons. In the days of Saul the man was already old and advanced in years.
13 The three eldest sons of Jesse had followed Saul to the battle; and the names of his three sons who went to the battle were Eli'ab the first-born, and next to him Abin'adab, and the third Shammah.
14 David was the youngest; the three eldest followed Saul,
15 but David went back and forth from Saul to feed his father's sheep at Bethlehem.
16 For forty days the Philistine came forward and took his stand, morning and evening.
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