“You are the salt of the earth. But what good is salt if it has lost its flavor? Can you make it useful again? It will be thrown out and trampled underfoot as worthless.” Matthew 5:13
If a seasoning has no flavor, it has no value. If Christians make no effort to affect the world around them, they are of little value to God. If we are too much like the world, we are worthless. Christians should not blend in with everyone else. Instead, we should affect other positively, just as seasoning brings out the best flavor in food.