The Old covenant kills because it relies on man power! The new covenant gives life because it is powered by God! God transforms his people into the same image. If a person is not being transformed by God through sanctification that results in discipleship and obedience, then he is not in Christ and he is in need of saving faith. If you consider yourself a carnal Christian, I urge you to pray that God would give you the gifts of faith and repentance. When these are granted, a person will then become a saved disciple of the Lord Jesus Christ and will have spiritual life that is powered by God rather than the flesh. For as the following passage points out, the flesh kills, but the Spirit gives life and it gives it now:
2 Corinthians 3:5-18 Not that we are sufficient in ourselves to claim anything as coming from us, but our sufficiency is from God, 6 who has made us competent to be ministers of a new covenant, not of the letter but of the Spirit. For the letter kills, but the Spirit gives life.7 Now if the ministry of death, carved in letters on stone, came with such glory that the Israelites could not gaze at Moses' face because of its glory, which was being brought to an end, 8 will not the ministry of the Spirit have even more glory? 9 For if there was glory in the ministry of condemnation, the ministry of righteousness must far exceed it in glory. 10 Indeed, in this case, what once had glory has come to have no glory at all, because of the glory that surpasses it. 11 For if what was being brought to an end came with glory, much more will what is permanent have glory.12 Since we have such a hope, we are very bold, 13 not like Moses, who would put a veil over his face so that the Israelites might not gaze at the outcome of what was being brought to an end. 14 But their minds were hardened. For to this day, when they read the old covenant, that same veil remains unlifted, because only through Christ is it taken away. 15 Yes, to this day whenever Moses is read a veil lies over their hearts. 16 But when one turns to the Lord, the veil is removed. 17 Now the Lord is the Spirit, and where the Spirit of the Lord is, there is freedom. 18 And we all, with unveiled face, beholding the glory of the Lord, are being transformed into the same image from one degree of glory to another. For this comes from the Lord who is the Spirit.
No lordship sanctification, no regeneration! No regeneration, no salvation!