If you are flirting with Moses, you are cheating on Jesus!
What does this mean?
If you attempt to follow any part of the Old Covenant Law, or try to marry any part of it to the New Covenant (including the Ten Commandments), putting new wine in old wine skins, you are spitting on Jesus' accomplishment and trying to do it by your own performance. The Law has no place in the life of the Christian (Rom. 6:14; Gal. 5:18). The only law the Christian adheres to is the Royal Law of the Kingdom of God: "love one another just as I have loved you" (John 13:34). This includes loving your neighbours (Mark 12:31) and loving your enemies (Matt. 5:43-48).
The Christian is not a law unto himself, but in his freedom he does not act in a way that violates the limitations that love for others (John 13:34; Mark 12:31; Matt. 5:43-48) and holiness before Yahweh God place on Christian liberty. Jesus died once for all sins for all men for all time. This does not get credited to your account until you trust and believe in and on Jesus as your Lord and Saviour. Because He lives, having resurrected from the dead, His sacrifice is eternal. We do not need to offer sacrifices every year. This is how our sins can be forgiven and remembered no more. He eternally sits as our mediator and intercedes on our behalf. He fulfilled the Law (Matt. 5:17) and then made it obsolete (Heb. 8:13) as He established the New Covenant (Luke 22:20), which was activated at His death (Heb. 9:17).
Enjoy grace!