Asking God to “create a clean heart in me oh God and renew a right spirit within me” is a slap in the face of Jesus. Do we not have Jesus? Our spirit is as He is! We are not in the Old Covenant anymore. We are in a better covenant with better promises.

Even the prophet Ezekiel prophesied that we would get a new heart and spirit.

Ez 11:19 And I will give them one heart, and I will put a new spirit within you; and I will take the stony heart out of their flesh, and will give them an heart of flesh:

Ez 36:26 A new heart also will I give you, and a new spirit will I put within you: and I will take away the stony heart out of your flesh, and I will give you an heart of flesh.

Eph 4:24 And that ye put on the new man, which after God is created in righteousness and true holiness.