The letter kills because the sting of the law is death, and still applies for those who are not in Christ Rom 6:23 its not saying we now can worship other gods, to steal, covet, break God’s holy Sabbath day, vain His holy name or break the least of these commandments or edit God’s law which makes one their own god. This is a bad interpretation. If we are in Christ, we would be keeping His commandments and following in His footsteps and you can see thise teaching in John 15:10 1 John 2:6
If we are walking in the Spirit, we are obeying God‘s law, not breaking it. I believe this is a Truth you are not accepting.
1 John 3:24
Now he who keeps His commandments abides in Him, and He in him. And by this we know that He abides in us,
by the Spirit whom He has given us.
John 14:15 “
If you love Me, keep My commandments. 16 And I will pray the Father,
and He will give you another [e]Helper, that He may abide with you forever— 17 t
he Spirit of truth, whom the world cannot receive, because it neither sees Him nor knows Him; but you know Him, for He dwells with you and will be in you. 18 I will not leave you orphans; I will come to you.
Acts 5:32 And we are His witnesses to these things, and
so also
is the Holy Spirit whom God has given to those who obey Him.”
I still think you are not distinguishing the difference of the rest God gives, which we can receive anytime if in Christ and the Sabbath rest which is the seventh day thus saith the Lord thy God Exo 20:10.
The rest God gives is when we are in complete harmony with Him and His commandments. Isa 48:13 No one receives rest when we are in rebellion to Him. You can also see this in Rev 14:11 and Rev 14:12
Those who enter His rest also cease from their works as God did from His Heb 4:10 on the seventh day. Heb 4:4 so no we can’t edit His commandments and bypass them and think we are in harmony with His will. Not anything Jesus taught Mat 15:3-14 Mark 7:7-13 Mat 5:19-30 Mat 19:17-19 Mat 7:21-23 etc
Thats because God said not a jot or tittle can pass from God’s law, meaning no edits and why the Sabbath rest is still according to the commandment Luke 23:56 and God said the Sabbath rest is on the seventh day Exo 20:10
Hopefully one day you will consider these biblical Truths.