Proverbs 22:8a - He that soweth iniquity shall reap vanity:

We know what is right and wrong. When we continually do wrong, no good will come of it. Instead of being helpful and constructive, a life of wrong doing will have nothing to show for it. We need to make certain that things we do are good and will have a positive impact in our lives. Thank God we have His Word to guide us in the right way.