Genesis 2:21

And the Lord God caused a deep sleep (comp. Job 4:13, where it is the same word) to fall upon Adam. — Heb., the man.

One of his ribs. — The word is never translated rib except in this place, but always side, flank. This is the true meaning also of the Latin word by which it is rendered in the Vulgate, costa, as shown in the French côte, and our coast Both the Greek and Syriac also translate by words which primarily signify the side, but derivatively the rib. Woman was not formed out of one of man’s many ribs, of which he would not feel the loss. She is one side of man; and though he may have several sides to his nature and character, yet without woman one integral portion of him is wanting.

Closed up the flesh instead thereof. — Literally, closed up flesh under it, that is, in its place. This does not mean that man now has flesh where before he had this side, but that a cavity was prevented by drawing the flesh on the two edges close together. Metaphysically it means that man has no compensation for what was abstracted from him, except in the woman, who is the one side of his nature which he has lost.