Jesus Christ is descended from David
David was a shepherd, musician, poet, soldier, statesman, prophet, and king. He was a fierce fighter on the battlefield who showed endurance under hardships, a leader and commander strong and unwavering in courage, yet humble enough to acknowledge his mistakes and repent of his gross sins, a man capable of tender compassion and mercy, a lover of truth and righteousness, and above all, one with implicit trust and confidence in his God Jehovah.
David killed Goliath with a slingshot. Personally I think the event gets to much hype. All the time people try to encourage the little guys to fight big guys by saying "you can do it....even David beat Goliath!!" and I'm like "Yeah but David had a friggin slingshot! If you give me a gun I can take down big guys too but it wouldn't be very fair now would it?!?"
He committed audultry with Bathsheba and had her husband murderd.