Catholic Bible 101

‎"Whom does the devil pursue most? Perhaps you are thinking that it must be those who are tempted most; these would undoubtedly be the habitual drunkards, the scandalmongers, the immodest and shameless people who wallow in moral filth, and the miser, who hoards in all sorts of ways. No, my dear brethren, no, it is not these people. On the contrary, the Devil despises them, or else he holds onto them, lest they not have a long enough time in which to do evil, because the longer they live, the more their bad example will drag souls into Hell.

So, you will ask me, who then are the people most tempted? They are these, my friends; note them carefully. The people most tempted are those who are ready, with the grace of God, to sacrifice everything for the salvation of their poor souls, who renounce all those things which most people eagerly seek. It is not one devil only who tempts them, but millions seek to entrap them."

-- St. John Vianney

There is a payback for sin, (what goes around, comes around) and the payback is worse than the original sin itself. The problem is that we don’t see sin as something tangible, which has a debt attached to it. It’s like a credit card that runs up a balance; the balance has to be paid back, with a LOT of interest, at some point. We humans can’t see it, but it is still there nonetheless. Sin is also like a boomerang – You throw it, and it feels great. Then, when you least expect it, it comes back full circle and hits you in the back of the head, harder than when you threw it. And the deadlier the sin, the deadlier the payback.  And that's only the payback on earth, which is God's way of letting you know what awaits us in hell if we don't repent now.  The Church has been given the sacrament of confession by Jesus Himself, in John 20:21ff, so the truly wise will take advantage of God's grace in that beautiful sacrament.  In physics, there is a law that says "for every action, there is an equal and opposite reaction."  That is oh so true in life as well.