In this sermon, the speaker argues that believers shouldn’t “fight fair” because facing Satan on equal terms is not a fair fight, using David and Goliath to show the wisdom of knowing strengths, weaknesses, and God-given training. David rejects Saul’s armor, chooses five smooth stones, and uses a sling as a skilled long-range weapon rather than engaging Goliath’s close-combat advantage of size, age, and experience, trusting God who delivered him from the lion and bear. The message shifts to spiritual warfare: the most vulnerable person is the one who doesn’t realize they’re in a battle, and Christians don’t fight with worldly weapons. Instead, Scripture repeatedly calls believers to flee temptations like sexual immorality, idolatry, quarrels, and the love of money, keeping danger at a distance and resisting the devil by submitting to God.