And we have such trust through Christ toward God. 5 Not that we are sufficient of ourselves to think of anything as being from ourselves, but our sufficiency is from God, 6 who also made us sufficient as ministers of the new covenant, not of the letter but of the Spirit; for the letter kills, but the Spirit gives life. —2 Corinthians 3:4-6.
Paul quickly adds that his confidence is not based on self-effort, but on what the Holy Spirit has done. His confidence comes because of God’s action through Christ.