Unfortunately, Kh, your understandings of the Scriptures is woefully underdeveloped and, dare I say, childish. GOD never once instructs marriage within the Law. We can infer whatever we want from the Genesis allegory, but as I have illustrated in the below article, the Church manufactured its version of marriage; not GOD.

Biblical Marriage Is Not Biblical

https://keith-michael.medium.com/biblical-marriage-is-not-biblical-981fcf13235c