You say that as though I am the only one that says that.
"God said to David that He gave David everything he currently had, his wealth, power, and authority and these had been too little He could have given David more. You assumed that God meant more wives, but that isn't what is stated. God could have made David emperor of many nations. God's point is that David had it all, so his taking another man's wife was all that more despicable. lThere is nothing in this passage that indicates God sanctioned polygamy."
http://lavistachurchofchrist.org/LVanswers/2011/02-14.htm
Not an SDA.
"At face value, this seems to suggest that God gave David multiple wives, and then stood ready to add to his harem with divine sanction. Of course, that’s precisely the problem with pressing Scripture into a wooden literal labyrinth, because—in truth—if Nathan’s words are anything at all, they are
ironic. David had just murdered a man in order to have another woman appended to his harem. Despite the generosity of the very God who had made him sovereign ruler of the land, the king had stolen the wife of a servant and that to satisfy his carnal lust. Thus, in language that dripped with irony, Nathan the prophet pronounces judgment against Israel’s king. As such, 2 Samuel 12 hardly constitutes divine approval for the practice of polygamy."
https://www.equip.org/hank_speaks_out/does-2-samuel-12-approve-of-polygamy/
Also not SDA
Jamieson-Fausset-Brown Bible Commentary
8. I gave thee thy master's house, and thy master's wives—The phraseology means nothing more than that God in His providence had given David, as king of Israel, everything that was Saul's. The history furnishes conclusive evidence that he never actually married any of the wives of Saul. But the harem of the preceding king belongs, according to Oriental notions, as a part of the regalia to his successor.
lust, David had to endure many days and years of extreme distress.
Barnes' Notes on the Bible
And thy master's wives ... - According to Eastern custom, the royal harem was a part of the royal inheritance. The prophets spoke in such matters according to the received opinions of their day, and not always according to the abstract rule of right. (Compare
Matthew 19:4-9.)
Benson Commentary
2 Samuel 12:8. I gave thee thy master’s house — All that pertained to him as a king, which came, of course, to David, as his successor. Thy master’s wives into thy bosom — For the wives of a king went along with his lands and goods unto his successor, it being unlawful for the widow of a king to be wife to any but a king, as appears by the story of Adonijah. The expression in the text, however, does not necessarily signify that David married any of them; nor have we any proof that he did. Indeed, it is doubtful whether he could consistently with the law of God. See
Leviticus 18:8;
Leviticus 18:15. The meaning seems only to be, that God put them into David’s power, together with Saul’s house and other property. And gave thee the house of Israel — Dominion over the twelve tribes. And if that had been too little, &c. — He needed but have asked, and God would have given him all he could have reasonably desired.
Matthew Poole's Commentary
Thy master’s wives, or, women, as that word is elsewhere used; as
Numbers 31:18. And though we read not a word of God’s giving, or of David’s taking, any of Saul’s wives into his bosom; or, which is all one, into his bed; yet (which I think to be aimed at here) it might be according to the manner of that time, that the wives and concubines of the precedent king belonged to the successor, to be at least at his dispose. And to pretend to them, was interpreted little less than pretending to the crown; which made it fatal to Adonijah to ask Abishag,
1 Kings 2:23; and to Abner to be suspected for Rizpah,
2 Samuel 3:8. And Absalom, usurping the crown, usurped the concubines also; which is looked on as a crime unpardonable,
2 Samuel 16:21. Nor would this have been reckoned amongst the mercies and blessings which God here is said to give him, and which are opposed to that which he sinfully took. But we do read, that Merab, Saul’s daughter, was given to him for his wife by Saul’s promise, and consequently by God’s grant; though afterwards Saul perfidiously gave her to another man; and that Michal, the other daughter, was actually given to him, 1Sa 18. And it is very possible that some other of David’s wives were nearly related to the house of Saul; whereby David might design to enlarge and strengthen his interest in the kingdom; although there is no absolute necessity of restraining this to Saul, seeing the word is plural, masters, and may belong to others also, who sometimes were owned by David as his masters, lords, or superiors, such as Nabal was, and some others not elsewhere named might be, whose houses and wives, or, at least, women, God might give to David. Such and such things; such other things as thou hadst wanted, or in reason desired.
Lamech was just the first one that took pleural wives and you very well know that. I am still waiting for the verse where God told anyone to take more than one wife.
If God was so pleased with Abraham's 2nd wife why did He send her away? It had not been God's wish and we are still paying the price in the middle east for that decision. It brought pain to the 1st wife and disharmony in the marriages. Hanna's husband should have waited for God to answer according to His will. A 2nd wife was certainly never needed for children, Hannah got more than she did.
Just because something is mentioned in the bible does not mean God approved---after all---so is murder and rape and stealing and everything else that Godly men have at times done.