It is clear that “the world” can never be considered our “community” nor our “home.” We are to be a light in the darkness. In order to do that, we cannot be “of” this world. As the darkness grows, a light seems to glow more brightly.
Jesus said, “To open their eyes, and to turn them from darkness to light, and from the power of Satan unto God, that they may receive forgiveness of sins, and inheritance among them which are sanctified by faith that is in me.” Acts 26:19
We are saved by faith, not by works. Good work after we are saved are a byproduct of our faith and Christian life. Some use Ephesians 2:8-9 in an attempt to justify the “good works gets one to heaven” ideology. But, it is very important to understand the distinction between salvation and rewards.