All through the reign of Saul, there was constant war with the Philistines, who lived upon the lowlands west of Israel. At one time, when David was still with his sheep, a few years after he had been anointed by Samuel, the camps of the Philistines and the Israelites were set against each other on opposite sides of the valley of Elah. In the army of Israel were the three oldest brothers of David.

Every day a giant came out of the camp of the Philistines, and dared some one to come from the Israelites' camp and fight with him. The giant's name was Goliath. He was nine feet high; and he wore armor from head to foot, and carried a spear twice as long and as heavy as any other man could hold; and his shield bearer walked before him. He came every day and called out across the little valley:

"I am a Philistine, and you are servants of Saul. Now choose one of your men, and let him come out and fight with me. If I kill him; then you shall submit to us; and if he kills me, then we will give up to you. Come, now, send out your man!"

But no man in the army, not even King Saul, dared to go out and fight with the giant. Forty days the camps stood against each other, and the Philistine giant continued his call.

One day, old Jesse, the father of David, sent David from Bethlehem to visit his three brothers in the army. David came, and spoke to his brothers; and while he was talking with them, Goliath the giant came out as before in front of the camp calling for some one to fight with him.

They said one to another:
"If any man will go out and kill this Philistine, the king will give him a great reward and a high rank; and the king's daughter shall be his wife."

And David said:
"Who is this man that speaks in this proud manner against the armies of the living God? Why does not some one go out and kill him?"

David's brother Eliab said to him:
"What are you doing here, leaving your sheep in the field? I know that you have come down just to see the battle."

But David did not care for his brother's words. He thought he saw a way to kill this boasting giant; and he said:

If no one else will go, I will go out and fight with this enemy of the Lord's people."