God is the Greatest Good
The greatest good is God; however, our culture tends to believe that good, in general, is only not doing bad things. If you refrain from doing bad things, then you must be good. Christians know the only good in this world is Jesus. Nothing else is good. Our culture believes that the greatest good is going above and beyond normal and doing something for someone else. In reality, though, the greatest good is found in the Lord. It cannot be found anywhere else because we live in an imperfect world. The only good comes from the Lord, because He is all good.