When Hashem created a wife for Adam Harishon, He called Adam “Ish” and He called Chavah “Ishah.” Hashem’s Name is found in both their names (the yud in “Ish” and the hei in “Ishah”). When a husband and wife walk in Hashem’s ways and do His mitzvos, they bear His name and He saves them from misfortune. However, if they don’t, Hashem removes His names and the letters left in “Ish” and “Ishah” spell “eish”—fire. They become two fires that consume each other, as it says (Iyov 31), “For fire will consume until annihilation.” (Pirkei D’Rebbi Eliezer, chapter 12)
