Well, actually Sarai, the night of handing over Hagar, did reference her so...though it's debatable if "wife" is meant because the Hebrew word for "woman" is the exact same word.
Still, after the fact, Sarai/Sarah never again references Hagar that way.
Abram, after he slept with Hagar, still references Hagar as only a servant girl--NOT his wife.
Hagar herself, post-sleeping with Abram, doesn't identify herself to the Angel of the Lord as Abram's new "wife," but still IDs herself as her "mistress" (female version of the word "master")
The angel of the Lord appearing to Hagar in Gen. 16 -- who some say was the pre-incarnate Christ appearing -- also references Hagar post-sleeping with Abram as someone who belongs to Sarai -- hardly the way you'd expect an angel to talk if Hagar was Abram's "wife". This angel told Hagar to return to Sarai -- not to Abram.
Moses, when he recounted Hagar 5 chapters later, references her as a slave/servant girl. (Not as Abraham's wife)
The apostle Paul, in Gal 4:21 and following, does the same.
However, IF polygamy is so blessed of the Lord, you should be embracing the FLDS, who are continuing in Smith’s revelation about the principle.
Good point. We'd expect, DU, that you would have provided a few written upbraids of SLC HQ for failing to live out D&C 132 -- all the while commending the fLDS for not only living it out but the verses you claim elevate polygamy. However, IF polygamy is so blessed of the Lord, you should be embracing the FLDS, who are continuing in Smith’s revelation about the principle.