This is a reference to "King Death," a pagan god who was believed to rule over death. AT: "the one who rules over the dead" or "the king of death" (See: [[rc://en/ta/man/translate/figs-explicit]])
People used sulfur to get rid of any diseases from a dying person. This can be stated in active form. AT: "after they spread sulfur all over his home" (See: [[rc://en/ta/man/translate/figs-activepassive]])