There is sth very good about him:He had a great confidence in God.in psalms he sometimes cries.but it is not the cries of an abandoned orphan over his misery,it is the cries of a dear child who is sure that his mother will come soon to huge him.His cries are so full of hope.He calles himself a servant of God, therefore his enemies are God's enemies.after his repentance, he is again so full of confidence, as though God was obliged or sworn to protect him and make him prosper. His trust in God is even greater than that of St.Therese who never ever commited a single mortal sin. and when God seems to be deaf to his prayer, he doesn't say:He has left me, I am too sinful to be heard by him, let me help myself." No he rather cried louder and believes God's silence be a proof ofd his Goodness.
there are 2 atitudes that one can have toward God:
1-like a beggar:"would you be so kind as to give me a penny?"
2-like a child:" dear Dad! I want a toy car. please buy me a blue one for my birthday".
David chose the second attitude.