What is the significance of salt & why is it so powerful ?
Tosfos explains that when Jews are waiting for each other they may be without Mitzvos , thus they need the salt covenant to help protect them.
This can be explained because salt is a composite of two ingredients , each of which is poisonous by itself , but together they are beneficial.
Thus it serves as a model that we need to always unite with others to help each other grow. That is one of the great lessons from salt.
Now may be a good time for a gem of Torah study.