In your faith. In my faith, there is, it is in D&C 132. So you do you, and I'll do me.
132:34: "God commanded Abraham, and Sarah gave Hagar to Abraham to wife. And why did she do it? Because this was the law; and from Hagar sprang many people. This, therefore, was fulfilling, among other things, the promises." for us, that is *law of God* that you claim doesn't exist. does to us.
If you don't want to observe that, that's fine for you, and I couldn't care less, but it's something to be observed by those of my faith. That's why I said "Depends on who you ask. I'm Mormon, we believe..."
Back to the key subject that you brought up... The claim that the book of mormon teaches that the law of Sarah is somehow the ability to withhold consent for her husband having multiple wives....
The chapter of the book that you cited says this further down...
64 And again, verily, verily, I say unto you, if any man have a wife, who holds the keys of this power, and he teaches unto her the law of my priesthood, as pertaining to these things,
then shall she believe and administer unto him, or she shall be destroyed, saith the Lord your God; for I will destroy her; for I will magnify my name upon all those who receive and abide in my law.
65 Therefore, it shall be lawful in me, if she receive not this law, for him to receive all things whatsoever I, the Lord his God, will give unto him, because she did not believe and administer unto him according to my word; and
she then becomes the transgressor; and he is exempt from the law of Sarah, who administered unto Abraham according to the law when I commanded Abraham to take
Hagar to wife.
This appears to teach that the wife is required by God to accept those that are given unto him and if she does not, then she is a transgressor and he is no longer bound by the law of Sarah.
So,
the whole point of this chapter appears to be Joseph Smith taking his wife Emma to task for not getting on board with him having multiple wives and is trying to use the "voice" of God as his personal advocate for him.
52
And let mine handmaid, Emma Smith, receive all those that have been given unto my servant Joseph, and who are virtuous and pure before me; and those who are not pure, and have said they were pure, shall be destroyed, saith the Lord God.
54
And I command mine handmaid, Emma Smith, to abide and
cleave unto my servant Joseph, and to none else. But
if she will not abide this commandment she shall be destroyed, saith the Lord; for I am the Lord thy God, and will destroy her if she abide not in my law.
citation ->
https://www.churchofjesuschrist.org/study/scriptures/dc-testament/dc/132?lang=eng