'Womb' in the Bible

“Sanctify to Me [that is, set apart for My purpose] every firstborn, the first offspring of every womb among the children of Israel, both of man and of animal; it is Mine.”

you shall set apart and dedicate to the Lord all that first opens the womb. All the firstborn males of your livestock shall be the Lord’s.

For it happened, when Pharaoh stubbornly refused to let us go, that the Lord struck every firstborn in the land of Egypt, both the firstborn of man and the firstborn of animal. Therefore, I sacrifice to the Lord all the males, the first [to be born] of every womb, but every firstborn of my sons I redeem.’

“All the firstborn males among your livestock belong to Me, whether cattle or sheep.