David used only one stone to defeat Goliath and the entire Philistine army (1 Sam. 17:49, 50). One stone set right the many blasphemies Goliath shouted at God’s people day after day (1 Sam. 17:16, 23). One stone redeemed the disobedience of every Israelite soldier who did nothing to resist Goliath. One stone was all…