though multiple wives were never prohibited by the bible. it is a stretch to claim that a capsule summary of a poly person’s life equates to a prohibition on that person’s lifestyle. this amounts to an interpretation by a person external to the words of the bible itself. everyone has an opinion.
You seem to be reading a different Bible than I do. Try the New Testament
Marriage was defined by God as one man one woman in the Gardennif Eden.
God consistently upheld that definition through scripture.
References to husbands and wives in all the laws referred to one husband and one wife. Analogies to Christ and His bride, not brides, etc. An extra wife was an anamoly.
He does recognize that men took extra wives and makes some protections for them and their children.
But he never commands or endorses multiple wives and actually shows multiple wives in a negative light in re Solomon and in showing the grief is the result of such marriages. Concubines as well.
And of course in the New Testament we are told a man with more than one wife can not hold church office.
Marriage is defined by God. Man sets about ruining and redefining it, but Gods will is clear in the matter.
18 The Lord God said, It is not good for the man to be alone. I will make a helper suitable for him.
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22 Then the Lord God made a woman from the rib[h] he had taken out of the man, and he brought her to the man.
23 The man said,
This is now bone of my bones
and flesh of my flesh;
she shall be called woman,
for she was taken out of man.
24 That is why a man leaves his father and mother and is united to his wife, and they become one flesh.
25 Adam and his wife were both naked, and they felt no shame.
Not 'prohibited' but note that a SINGLE woman was provided for Adam. THIS was the IDEAL model.