Here Jesus speaks of everyone being purified by experiencing suffering. He speaks of suffering as if it were fire, and he speaks of giving suffering to people as if it were applying salt to them. This can also be stated in active form. AT: "Just as salt purifies a sacrifice, God will purify everyone by allowing them to suffer" (See: [[rc://en/ta/man/translate/figs-metaphor]] and [[rc://en/ta/man/translate/figs-activepassive]])
Jesus speaks of doing good things for one another as if good things were salt that people possess. AT: "Do good to each other, like salt adds flavor to food" (See: [[rc://en/ta/man/translate/figs-metaphor]])