"If I will, saith the Lord of Hosts, raise up seed unto me,
I will command my people; otherwise they shall hearken unto these things."
Notice that Jacob condemned polygamy, except when the Lord wants his people "to raise up seed unto" him.
The
LDS church uses this verse to justify
Joseph Smith's polygamy revelation,
along with his 50 or so wives.
2:30
"We keep the law of Moses."
Since the Nephites obeyed all the Old Testament laws, shouldn't modern Mormons?" 4:5