The believer is no longer in bondage to the law’s condemnation and Satan’s dominion.

bible.com/bible/100/2co.3.17.NASB1995

Yahweh of the OT is the same Lord who is saving people in the New Covenant through the agency of the Holy Spirit. The same God is the minister of both the Old and New Covenants. there is liberty. Freedom from sin and the futile attempt to keep the demands of the law as a means of earning righteousness (cf. Jn 8:32–36 ; Ro 3:19 , 20 ).