As a boy I was privileged to attend some classes in the local Talmud-Torah. They taught a simple illustration on how to avoid sin. SIN is like falling over a cliff. It leads to destruction. So God gave the TORAH (laws) like a fence at the top of the cliff. It kept us away from the danger of falling. But if we mess around and climb on/through the fence, we could still fall! So God gave us the TALMUD with rules about staying off the fence so we won't ever come near to falling off the cliff. Yet some still wandered near, looking longingly at the fence and wished they could climb it (and maybe fall over the cliff). So God gave the MISHNAH to warn us not to even look at the fence! Which is sin - Falling over the cliff? Climbing on the fence? Walking by the fence? Looking at the fence? My teacher said only the "over the cliff" actual breaking of God's Law is sin. The rest are good and practical teaching of man, but NOT sin. I've never forgotten that. So many "sins" we preach today are not in the Bible, not written to keep us from going "over the cliff". They are the rules and regs of men, with good hearts and who have seen folks go over the cliff. But they are not sin and we'd better all remember that.