Ezekiel 36:26-27

Ezekiel 36:26-27. 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. And I will put my spirit within you, and cause you to walk in my statutes, and ye shall keep my judgments, and do them.

The old covenant told us what to do, and commanded us to do it; but the new covenant enables us to do it; yea, it works in us that obedience which we never could have rendered to the old law, but which the new covenant gives to us.