[Canticle_of_Deborah]

No, I don't have problems with reading comprehension but apparently you do. CITE the Scriptures where God specifically APPROVES of polygamy.

I acknowledge polygamy occurred in the OT but God never instructed it.

Deuteronomy 17:17 17 He shall not have many wives, that may allure his mind, nor immense sums of silver and gold.

Both David and Solomon were great men but sinners. David inherited his enemies wives as part of his enemies' property, as was the custom at that time. Unless you can provide a Scripture otherwise, his prior polygamy was his own choosing not God's instruction.

Second, Solomon's multiple wives were his undoing and led him away from God as predicted above in Deuteronomy.

[Auntie Dem]

God did give his people instructions about how to treat the plural wives. Had He intended for his people at that time to not practice polygamy he would have told them so. Instead, he gave them laws to govern the proper practice of polygamy.

Exodus 21:10 If he take him another wife; her food, her raiment, and her duty of marriage, shall he not diminish.

Deuteronomy 21:15-17 If a man have two wives, one beloved, and another hated, and they have born him children, both the beloved and the hated; and if the firstborn son be hers that was hated;
16. Then it shall be, when he maketh his sons to inherit that which he hath, that he may not make the son of the beloved firstborn before the son of the hated, which is indeed the firstborn:
17. But he shall acknowledge the son of the hated for the firstborn, by giving him a double portion of all that he hath: for he is the beginning of his strength; the right of the firstborn is his.

I still maintain your aversion to polygamy is culturally induced. There have been times in the past, and perhaps there may be times in the future, when there may be a valid, practical cultural reason for polygamy to be practiced by his people. If and when that happens, God will instruct his people accordingly--whether you like it or not. Remember, God's ways are not your ways, neither are your ways God's ways.

[Auntie Dem]

Oh, and about Deut 17:17
That prohibition applied to Israel's Kings--not rank-and-file men. Also, what that verse was intended to apply to was marriages of political convenience for political alliances with other countries. Such marriages were common as ways of strengthening tenuous bonds between potential rivals, or avoiding military ot economic conflicts. God did not want his leaders to have their heads turned by wives that worshipped idols or other false gods.