Psalm 51:12 Restore to me the joy of your salvation and grant me a willing spirit, to sustain me.
It’s interesting the Psalmist doesn’t presume to call it “my” salvation. He knows about that salvation. He remembers there was joy but that’s not his to claim right now either. There’s baggage here to be sure.
He’s been confronted with his sin of adultery. Nathan’s words have penetrated his mind. He’s finally come to understand his heart has fooled him into accepting his freedom to sin as a substitute for the support of that salvation. That changed heart prompts him to write one of his most beautiful prayers:
“Create in me a pure heart, O God, and renew a steadfast spirit within me. Restore to me the joy of your salvation and grant me a willing spirit, to sustain me.”