Adam called his wife Ishah, and himself he called Ish, abandoning the name Adam, which he had borne before the creation of Eve, for the reason that God added His own name Yah to the names of the man and the woman--Yod to Ish and He to Ishah--to indicate that as long as they walked in the ways of God and observed His commandments, His name would shield them against all harm. But if they went astray, His name would be withdrawn, and instead of Ish there would remain Esh, fire, a fire issuing from each and consuming the other.