'Womb' in the Bible
“See, I have taken the Levites from the Israelites in place of every firstborn Israelite from the womb. The Levites belong to Me,
and these waters that bring a curse will go into your intestines to cause [your] womb to swell and to make [your] hip fall away." And the women will say, "Amen. Amen."
For they are wholly given unto me from among the children of Israel; instead of such as open every womb, even instead of the firstborn of all the children of Israel, have I taken them unto me.
Let her not be as one dead, of whom the flesh is half consumed when he cometh out of his mother's womb.
Everything that opens the womb, any living thing that they bring to the LORD whether from human beings or animals are for you. Just be sure that you redeem the firstborn of people and the firstborn of unclean animals.