Why is salt important - JSS2 Christian Religious Studies Sermon on the Mount II Question

Christians as salt of the earth: Salt is good because it preserves things like fish from decay. It also improves the taste of the food that you eat. As salt of the earth, your duty as a Christian is to behave in such a way that you become the agent of preserving and improving the quality of life in the society, so that there is good relationship between men and God and between one another.