Rabbi Akiva on Man, Woman and Fire

It was he who taught: “If husband and wife are deserving, God’s Presence dwells in their midst. If they are not deserving, fire devours them.” “For,” said Rabbi Akiba, “the Hebrew word for man is ish, spelled aleph, yod, shin. Remove the yod and you have aleph, shin or esh, meaning fire. The Hebrew word for woman is ishah, spelled aleph, shin heh. Remove the heh and, once again, you have esh, meaning fire."