And the staff of his spear was like a weaver’s beam; and his spear’s head weighed six hundred shekels of iron: and one bearing a shield went before him. (1 Samuel 17:7)
Its weight would be about 15 lb. (6.82 kg.). The ball used in the sport of shot-putting weighs 16 lb. (7.27 kg.). Although the champion’s armor was bronze, the spear tip was iron, a relatively new and more expensive metal.