2 Corinthians 3:6, 9

He has qualified us [making us sufficient] as ministers of a new covenant [of salvation through Christ], not of the letter [of a written code] but of the Spirit; for the letter [of the Law] kills [by revealing sin and demanding obedience], but the Spirit gives life. [Jer 31:31]

For if the ministry that brings condemnation [the old covenant, the Law] has glory, how much more does glory overflow in the ministry that brings righteousness [the new covenant which declares believers free of guilt and sets them apart for God’s special purpose]!