Mark 9:50 “Salt is good, but if it loses its saltiness, how can you make it salty again? Have salt among yourselves, and be at peace with each other.”
Almost every chef will tell you to add a pinch of salt to various things to add a bit of flavour; but it can be used for a whole lot more.
Salt is used to dry and preserve foods, to keep germs from corrupting those foods.
We need God in our lives for the same reason, to protect and preserve us against the corruption surrounding us.
Without God, corruption comes in and corrupts everything very quickly!