Salt and light: what Jesus meant in Matthew 5:13-16

Jesus did not say, “Try to become salt.” He said, “You are the salt of the earth.” In Matthew 5:13-16, straight after the Beatitudes, he tells a crowd of ordinary people from the villages of Galilee that they already have a role in the world. The question is whether they will live it out.

Salt in the ancient world

In the first century, salt was precious. It preserved food in a world without refrigeration, gave flavour, and was used in sacrifices. Covenants were sometimes described as “covenants of salt” because salt does not decay. When Jesus called his followers salt, his listeners would have thought of something that preserves, purifies and gives taste.

Losing taste

Jesus warned, “If the salt loses its saltiness, how can it be made salty again?” Pure sodium chloride does not lose its flavour, but the salt of the region was often mixed with other minerals. If the actual salt washed out, what remained was useless and was thrown on the road. The warning is that disciples who lose what makes them different are of little use to the world.

The light

Jesus then said, “You are the light of the world. A town built on a hill cannot be hidden.” Galilean towns were often built on hills, and at night their lamps could be seen from far away. A believer’s life is meant to be visible. Elsewhere, Jesus calls himself the light of the world (John 8:12). His followers reflect his light rather than producing their own.

Good works

“Neither do people light a lamp and put it under a bowl.” The houses of ordinary Galileans were often a single room. One lamp on a stand could light the whole house. To light a lamp and then cover it would be foolish. So is faith that is hidden away. The passage ends: “Let your light shine before others, that they may see your good deeds and glorify your Father in heaven.” The aim is not to be admired. Good deeds point to God. This balances Jesus’s later warning in Matthew 6 not to practise righteousness to be seen by people. The difference is motive: one seeks praise for self, the other seeks glory for God.

Today

For Christians in Ghana and across Africa, the teaching has practical meaning. Salt can mean honesty in business when corruption is normal, fairness in public office and kindness in families. Light can mean visible faith that does not hide in the church building. A believer in a ministry, a market or a classroom can be salt and light in the place God has put them.

Lord, you have called me salt and light. Keep me from losing what makes me yours. Let my life be seen, not for my glory, but so that others may see your goodness and praise you. Amen.