While David was still a boy the Philistines gathered together their armies to do battle against King Saul and his army. The giant Goliath taunted the King throwing a one-on-one challenge against him. David had been sent to carry food to his brothers and said this about Goliath’s challenge.
1 Samuel 17:26, “And David spake to the men that stood by him, saying, What shall be done to the man that killeth this Philistine, and taketh away the reproach from Israel? for who is this uncircumcised Philistine, that he should defy the armies of the living God?” 1 Samuel 17:36, “Thy servant slew both the lion and the bear: and this uncircumcised Philistine shall be as one of them, seeing he hath defied the armies of the living God.”
David met Goliath devoid of any armor armed only with a sling and five stones. David was ready not only to take on Goliath but also his four brothers who also were giants.
King Saul was rather unbalanced and David often play his harp and sang to him to soothe him. Even though David was loyal, Saul was jealous of David and sought to kill him.
Later as King David was an outstanding warrior with a very loyal following of his mighty men. David was in fellowship with God and as such enjoyed one victory after another. Success followed success and then King David started to stay at home rather than going out to battle with his men. At this point, he fell into the sin of the flash and not only committed adultery with Bathsheba but arranged the murder of her husband. In addition to his sins of the flash including the taking of many wives, David also committed the sin of pride by initiating a census. David repented of his sins and was forgiven by God and was still a man after God’s heart. Nevertheless, there was a price to be paid. Not only did 70,000 die as a result of the census, David’s house was dysfunctional with incest and his sons rebelling against him.