What does 1 Samuel 17:5 mean?
The Israelite and Philistines armies are gathered for war, each force occupying a side of the Valley of Elah (1 Samuel 17:1–3). A Philistine champion has emerged. These "champions" were the strongest soldiers, sent to challenge the enemy's strongest soldier to one-on-one combat to decide the battle. He is Goliath of Gath, and he stands at about nine feet, nine inches tall, or about three meters (1 Samuel 17:4). Given his city or origin and his stature, Goliath was likely a descendent of the giant-like people of Anak (Numbers 13:28, 22; Deuteronomy 1:28).In addition to being huge, Goliath is clad in impressive armor. Beyond size, this may have differed from that given to the rank-and-file of the Philistine army. He is wearing a bronze helmet and covered with scale armor that weighs about 126 pounds, or roughly 57 kilograms. Scale armor was built by sewing hundreds of overlapping small plates onto a leather or cloth shirt or tunic that reached as low as the knees or ankles. The image is essentially that of a giant serpent. Some commentators have noted that Goliath's snake-like appearance could be linked to David's apparent innocence, as a metaphor for Christ overcoming Satan (Genesis 3:1, 15; Revelation 12:9; 20:2). The precise way in which David defeats his opponent also invites these comparisons (1 Samuel 17:49).