See below to lengthy for answer body but this has a pretty fair take on it. (IMO)
She was a woman who King David had an affair with. He was supposed to go fight with his army (where God wanted him) but he stayed back and saw Bathsheba washing naked and had her delivered to him, He got her pregnant and then had to have her husband killed. But God's grace and forgiveness was extended to him even after all that.
Davids great sin were two mainly sending Uriah in the front during war so he would be killed and then he could marry Bethsheba. The next one was that he commited adultery with her , against the law of god.
As Saul had been appointed by God, David believed that it was not his place to act against God's chosen king. God honoured David for his obedience.
God helped David when he looked after the sheep as a boy, he helped to kill the bear and lion,in Psalm 23.
A loin and a Bear
David was a very strong man he who only can kill a giant because he has a strong faith to god
God protected David from Saul's attempts to harm him, providing him with wisdom to navigate dangerous situations and securing his safety. God also reassured David of his presence and faithfulness, giving him the strength to endure the challenges he faced.
Because the cyclopes' father which was the god of sea would punish him or kill him if he did. So he escaped without killing him to be safe but the Cyclopes prays to his father to kill Odysseus. :)
No David was not at all scared of Goliath at all . In fact he said I come in the name of the living god and I shall kill you , and the birds of the air will devour you.
God does not have to kill anyone in the sense of taking action, we are all as good as dead apart from God granting us life moment by moment. If God only stopped willing for someone's life to continue, that person would have dropped dead in that very second.
David and goliath, hannen tells the queen he wants her to kill mortikah,god created heavens and earth.
God is the master of all creation and he did not kill me, on the contrary, he created me.