What does it mean to be a salt for glory and benefit the people?

It means anything is possible.

But not all are beneficial, all are feasible, but not all are artificial. No matter who asks for his own benefits, he asks for the benefits of others.

Spirit and soul: Jesus used the metaphor of salt and lamp to let us know that Christians should be like Christ, otherwise the name of God will be damaged. Solemnly declare: the answer is for reference only, don't blindly believe it.