The LORD God said: It is not good for the man to be alone. I will make
a helper suited to him. So the LORD God formed out of the ground
all the wild animals and all the birds of the air, and he brought them
to the man to see what he would call them; whatever the man called
each living creature was then its name. The man gave names to all
the tame animals, all the birds of the air, and all the wild animals;
but none proved to be a helper suited to the man.

So the LORD God cast a deep sleep on the man, and while he was
asleep, he took out one of his ribs and closed up its place with
flesh. The LORD God then built the rib that he had taken from the
man into a woman. When he brought her to the man, the man said:

“This one, at last, is bone of my bones and flesh of my flesh;
This one shall be called \emph{woman,}
for out of man this one has been taken.”

That is why a man leaves his father and mother and clings to his wife,
and the two of them become one body.
