Gal 6:7-8: Do not be deceived, God is not mocked; for whatever a man sows, that he will also reap. For he who sows to his flesh will of the flesh reap corruption, but he who sows to the Spirit will of the Spirit reap everlasting life. 

"The corruption Paul mentions has nothing to do with hell. He is talking about the consequences on this earth. If a person--believer or nonbeliever--makes decisions according to their impulses and desires of the flesh, the result will always be corruption--a wrecked and ruined life. Those persons who have not comes to grips with the concept of forgiveness have by their very nature of unforgiveness set themselves uyp to walk according to the flesh. When that happens they are losers every time. By withholding patience, kindness, gentleness, self-control, and the rest, the individuals held hostage by the flesh and thus: is the ultimate loser." --Charles Stanley "Forgiveness"  p19-20