'...when I come to the Lord after I've blown it, I've only one argument to make. It's not the argument of the difficulty of the environment that I am in. It's not the argument of the difficult people that I'm near. It's not the argument of the good intentions that were thwarted in some way. No. I have only one argument. It's right there is the first verses of Psalm 51, as David confesses his sin with Bathsheba. I come to the Lord with only one appeal, his mercy. I've no other defense. I've no other standing. I've no other hope.'
Paul David Tripp, Whiter than snow; meditations on sin and mercy, p.22.