The NAUVOO NEIGHBOR prints Joseph's and Hyrum's testimony before the Nauvoo City Council explaining that Hyrum Smith "referred to the revelation, read to the High Council of the Church, which has caused so much talk about a multiplicity of wives; that said revelation was in answer to a question concerning things which transpired in former days, and had no reference to the present time." The article quotes Joseph Smith as having said, "They make it a criminality for a man to have a wife on the earth while he has one in heaven." He added that "the order [was] in ancient days, having nothing to do with [t]he present times." This issue also carries Hyrum's statement accusing William Law of adultery. Both Joseph and Hyrum are secretly practicing polygamy at this time.
[On This Day in Mormon History, http://onthisdayinmormonhistory.blogspot.com, based on Michael Quinn's Mormon Hierarchy vols 1 & 2]