The Mosaic Law gives a clear definition of sin. Some of those are fairly easy to distinguish like murder, adultery, lying, stealing, coveting, and dishonoring your parents – all mentioned in the Ten Commandments. Plus there are the first four concerning your relationship with God.
The Ten doesn’t cover other things like sacrificing children to Molech, cursing your parents, adultery, incest, homosexuality, marrying a woman and her mother, bestiality, and being a medium, all of which I mentioned last time.
However the Law expounded on those practices even to the minute details of one’s diet, clothing, and farming; and going so far as to inform of when sexual relations in the marriage were prohibited.
The term “cut off from his people” is a regular occurrence in the Law, even for seemingly small things.
The incense that was burned to the Lord had to be made. In the Law you couldn’t make any for yourself.
Whoever makes any like it, to smell it, he shall be cut off from his people. Ex 30:38
It was sin. The whole purpose of the Law is to show us that we have sinned.
I would not have known sin except through the law. For I would not have known covetousness unless the law had said, “You shall not covet.” Rom 7:7
The strength of sin is the law. 1 Cor 15:56
God shows how each person is subject to sin. Then God shows that each person should be Lawfully punished for sin – even in the smallest of things.
Then God prescribed a sacrifice for each sin.
If the truth be told and the whole earth was subject to the Law and under the Law, I dare say there would not be a sacrificial animal left on the face of the earth.
Instead God sent His Son, the Lamb of God, to pay for our sins.
With His sacrifice also comes the Holy Spirit, which gives you strength to fight and claim victory over sins desires in you.
But thanks be to God, who gives us the victory through our Lord Jesus Christ. 1 Cor 15:57
Therefore do not let sin reign in your mortal body, that you should obey it in its lusts. And do not present your members as instruments of unrighteousness to sin, but present yourselves to God as being alive from the dead, and your members as instruments of righteousness to God. For sin shall not have dominion over you, for you are not under law but under grace. Rom 6:12-14