“Create in me a pure heart, O God, and renew a steadfast spirit within me.” Psalm 51:10
Renewal, that seems to me to be the theme of Psalm 51. It is not just that we have screwed up once and seek forgiveness for that transgression – though that is part of it. There is also an understanding that once that sin is washed away, there are others behind it, or others to come. “For I know my transgressions and my sin is always before me.” v. 3
So, it is a prayer of renewal, yes, but also a plea to God to not give up on us despite the mess we have made of things. “Do not cast me from your presence or take your Holy Spirit from me.” v. 11-12 Indeed, if I may be so bold (and I am): “Restore to me the joy of your salvation.” V. 12. In that sense, it is kind of like shampoo — Rinse — Lather — Repeat.
It occurs to me... 