Matthew 5:13-20
These verses teach us, in the first place, the character which true Christians must support and maintain in the world.
The Lord Jesus tells us that true Christians are to be in the world like “salt.” “Ye are the salt of the earth.” Now salt has a peculiar taste of its own, utterly unlike anything else. When mingled with other substances it preserves them from corruption; it imparts a portion of its taste to everything it is mixed with. It is useful so long as it preserves its savour, but no longer. Are we true Christians? Then let us see here our office and our duties!