Genesis 2:22-25

Then the LORD God made the rib he had taken from the man into a woman and brought her to the man. And the man said: This one, at last, is bone of my bone and flesh of my flesh; this one will be called “woman,” for she was taken from man. This is why a man leaves his father and mother and bonds with his wife, and they become one flesh. Both the man and his wife were naked, yet felt no shame.