Truly, these times of ignorance God overlooked, but now commands all men everywhere to repent, because He has appointed a day on which He will judge the world in righteousness by the Man whom He has ordained. If you are driving the wrong way, you must change your mind about the direction you're going before you're willing to turn around. You must change your mind about the love and practice of your sin. You see sin as God does. By sin, man lost his destiny.
Sin is what is wrong with the world.
People's conflict with others is traced to the selfishness of sin. We've all felt the pangs of guilt. Repenting isn't just being sorry you got caught in doing something bad. You should want to turn away from it. In the torment of the cross, sin is unmasked in all its ugly enormity.