2 Cor 3: 7Now if the ministry that brought death, which was engraved in letters on stone, came with glory, so that the Israelites could not look steadily at the face of Moses because of its glory, fading though it was, 8will not the ministry of the Spirit be even more glorious? 9If the ministry that condemns men is glorious, how much more glorious is the ministry that brings righteousness! 10For what was glorious has no glory now in comparison with the surpassing glory. 11And if what was fading away came with glory, how much greater is the glory of that which lasts!
12Therefore, since we have such a hope, we are very bold. 13We are not like Moses, who would put a veil over his face to keep the Israelites from gazing at it while the radiance was fading away. 14But their minds were made dull, for to this day the same veil remains when the old covenant is read. It has not been removed, because only in Christ is it taken away. 15Even to this day when Moses is read, a veil covers their hearts. 16But whenever anyone turns to the Lord, the veil is taken away. 17Now the Lord is the Spirit, and where the Spirit of the Lord is, there is freedom. 18And we, who with unveiled faces all reflect[a] the Lord's glory, are being transformed into his likeness with ever-increasing glory, which comes from the Lord, who is the Spirit.
NIV
I'm not sure if we are really debating anything now. Your post confirms what I said. The law slays us as guilty sinners before God, so we can be resurrected by the new covenant. Not that the problem was with the law, but with us.
Romans 7:5-7 says
5For when we were in the flesh, the motions of sins, which were by the law, did work in our members to bring forth fruit unto death.
6But now we are delivered from the law, that being dead wherein we were held; that we should serve in newness of spirit, and not in the oldness of the letter.
7What shall we say then? Is the law sin? God forbid. Nay, I had not known sin, but by the law: for I had not known lust, except the law had said, Thou shalt not covet.
Paul can say the letter kills because the law, exposing our guilt, “kills” us before God. It thoroughly and completely establishes our guilt.
It isn’t that the Holy Spirit replaces the written law, but completes and fulfills the work of the written law in our hearts.
So, we can’t throw away or neglect our Bibles (which some might say is the letter), because now we have the Spirit. Instead, the Spirit makes us alive to the letter, fulfilling and completing the work of the the letter in us. We also shouldn’t think this is permission to just live our Christian life on experiences or mystical interpretations of the Bible. Experiences and seeing allegories in the Bible are fine, but each must be proved true and supported by studying the literal meaning of the Bible. The Spirit and the letter are not enemies, but friends. One doesn’t work to the exclusion of the other, but one is incomplete without the other.