We are not under the law.
We are led of the Spirit and should be living in the Spirit and walking in the Spirit.
KJV Galatians 5:18 But if ye be led of the Spirit, ye are not under the law.
KJV Galatians 5:25 If we live in the Spirit, let us also walk in the Spirit.
If we are walking in the Spirit we won't sin.
KJV Galatians 5:16 This I say then, Walk in the Spirit, and ye shall not fulfil the lust of the flesh.
If we have the mindset of "keeping the commandments" (Moses) then we are not living by faith.
KJV Galatians 3
11 But that no man is justified by the law in the sight of God, it is evident: for,
The just shall live by faith.
12 And the law is not of faith: but, The man that doeth them shall live in them.
When we sin then that means we have stopped following the leading of the Spirit and responded to the flesh; the old man; the outer man, the adamic man.
It's what the world calls a paradox.
When we quit trying to keep the commandments and follow the Spirit, by so doing we keep the commandments.
HankD