1 Samuel 17:4-6

4And there went out a champion out of the camp of the Philistines, named Goliath, of Gath, whose height was six cubits and a span. 5And he had an helmet of brass upon his head, and he was armed with a coat of mail; and the weight of the coat was five thousand shekels of brass.1 6And he had greaves of brass upon his legs, and a target of brass between his shoulders.2