makairos
What it means
David does not ask to be improved but to be made new. The verb is the one used for creation from nothing; a clean heart is something only God can bring into being.
David’s confession after Nathan confronted him about Bathsheba and Uriah. The psalm refuses excuses and asks for mercy.
Where it addresses you
You have sinned and feel unclean.
You are tired of trying to fix yourself.
Found in The Psalms, Holiness.