As we all know we can't have a verse or verses say one thing and in another place in scripture it say something that contradicts.
@SabbathBlessings is showing you where in scripture it is says different than what you think 2 Corinthians is stating. That is her point as we see it. 2Corinthians needs addressed though.
The first section verses 3-6 is just another way of stating the new covenant. We are living letters with a changed heart through rewriting of it through God's Spirit. Therefore the ministry tools went from tables of stone and parchment to us. It is no longer a ministry that is imposed and ministered by an outside source but from an inside change in us through the Spirit of the living God. Having a new spirit, God's Spirit in us is the same as saying we have His laws in our hearts and minds (Hebrews 8:10-12). Which is the same as saying we have His word in our hearts and mouths (Romans 10:6-8). Because if we have His spirit we have His law, His word. It is part of us because God is part of us and it is of Him. As it is also written, Us in Him, He in us that the world might believe.
It is to be the ministry that has changed not that which is of the ministry. As
@SabbathBlessings points out the Word, God's law show us our sin. So in that respect as long as sin is an issue the law has a purpose. As it is written, the law is for the sinner, the ungodly and the profane. (1 Timothy 1:8-10) But the ministry is not what it is suppose to be. Stiffnecks and hardhearts won't let our sin go and therefore the letter and the tables of stone. Even so much we continued in parchment in that we through evilness needed a new letter outside of the body of Christ to continue the ministry. Hence the New Testament. Still A people choosing to follow man and things on the outside, the ministry of death rather than God and His Spirit from the inside.
2Cor 3:2 Ye are our epistle written in our hearts, known and read of all men:
2Cor 3:3 Forasmuch as ye are manifestly declared to be the epistle of Christ ministered by us, written not with ink, but with the Spirit of the living God; not in tables of stone, but in fleshy tables of the heart.
2Cor 3:4 And such trust have we through Christ to God-ward:
2Cor 3:5 Not that we are sufficient of ourselves to think any thing as of ourselves; but our sufficiency is of God;
2Cor 3:6 Who also hath made us able ministers of the new testament; not of the letter, but of the spirit: for the letter killeth, but the spirit giveth life.
2Cor 3:7 But if the ministration of death, written and engraven in stones, was glorious, so that the children of Israel could not stedfastly behold the face of Moses for the glory of his countenance; which glory was to be done away: