The general theme of Matthew 5:13-16 is promises and expectations, and these expectations follow the promises of the first part. The first verse of this passage introduces the phrase "salt of the earth": Ye are the salt of the earth: but if the salt have lost its savor, wherewith shall it be salted? it is thenceforth good for nothing, but to be cast out and trodden under foot of men. The last verses refer to lamp under a bushel, which occurs in Luke 8:16-18 and Light of the World which occurs in John 8:12.