1 Samuel 17:4-14

A man named Goliath, from the city of Gath, came out from the Philistine camp to challenge the Israelites. He was nearly three metres tall and wore bronze armour that weighed about 57 kilogrammes and a bronze helmet. His legs were also protected by bronze armour, and he carried a bronze javelin slung over his shoulder. His spear was as thick as the bar on a weaver's loom, and its iron head weighed about seven kilogrammes. A soldier walked in front of him carrying his shield. Goliath stood and shouted at the Israelites, “What are you doing there, lined up for battle? I am a Philistine, you slaves of Saul! Choose one of your men to fight me. If he wins and kills me, we will be your slaves; but if I win and kill him, you will be our slaves. Here and now I challenge the Israelite army. I dare you to pick someone to fight me!” When Saul and his men heard this, they were terrified. David was the son of Jesse, who was an Ephrathite from Bethlehem in Judah. Jesse had eight sons, and at the time Saul was king, he was already a very old man. His three eldest sons had gone with Saul to war. The eldest was Eliab, the next was Abinadab, and the third was Shammah. David was the youngest son, and while the three eldest brothers stayed with Saul