Sin?

what is sin? and must a sinner only know? who decides what sin is and what sin is not? is it something that is simple to see? or is it disguised? Like most ordinary things if it is sin isn’t it ordinary to see? comes and shows itself right out in the open with pride or does it hide? for most things precious in life are very hard to see but then again precious is not similar to sin but is sin always wrong? if it is sin then why not spell it out? what if sin feels good? so good that you can not turn away is that sin? it takes your breath away and dances on your tongue it slides up and down your spine and touches inner means is that sin? and if so why? something so right should not be wrong so close to ecstasy but is not right why? what is sin? and must a sinner only know? if so… then what am I?