Kommentar zu Mischlej 2:18

for her house sinks to death This refers back to “to save you, etc.” for whoever comes to her house will sink and slip as if down an incline that leads to death, and the Torah will guard you from this fall. Hence, it is a great thing for you.

the dead Heb. רפאים, those who neglect (נרפים) the way of goodness and are forsaken without support until they fall into Gehinnom.