That’s the difficult part about being the light of the world; it means that we must stand for truth even when we are pressured not to. Jesus was the light, the great bringer of absolute clarity, and it cost Him His life. We shouldn’t be surprised when being the light costs us as well. Jesus knew this, and so He warned against the temptation to dampen the bright light within us.
But our light is not meant to be muted; it’s meant to be put on a stand or a hill and displayed. Christians are meant to exert their influence so obviously that no matter how far from the light a person might be they can still see it in the distance. Just as He is the light of the world, so also may our light shine out in the increasingly darkened world of our day.