By reader request: This is Psalm 51, set to modern music and performed by Keith Green. David wrote this after God punished his adultery with Bathsheba.
That was very serious business. Bad enough that David took a man’s wife. But he also used his power as king to get the man, Uriah the Hittite, killed in battle. So in addition to adultery, David was guilty of murder and treason. I use the word “treason” in its original sense, meaning a personal betrayal.
Clean in me a clean heart, O God, and a right spirit.
Who doesn’t need to pray that prayer?