The Philistines fought, and Israel was struck, and they fled every man to his tent: and there was a very great slaughter; for there fell of Israel thirty thousand footmen.
Perhaps the elders of Israel remembered that in Joshua’s conquest of Jericho, the ark played a very important and visible part in the victory (Joshua 6:2-20). Nevertheless, back then the people trusted in Yahweh, not in the ark as a talisman (good luck charm). The custom of taking idols into battle so their gods would deliver them was common among ancient warriors (cf. 2 Samuel 5:21; 1 Chronicles 14:12). Obviously the Israelites were wrong in thinking that the presence of the ark would guarantee success.