Original sentence: <ref>Debate as to the status of Smith and polygamy has been debated, since during Smith's lifetime he publicly denied having ever taught or practiced polygamy and condemned the practice.Emma Smith was bitterly opposed to this practice.In Nauvoo, it is believed Smith taught many new doctrines, which differed significantly from mainstream Christianity.Indeed, his widow and sons throughout their lifetimes were vehement that Smith had no association with the practice, and no offspring were produced from the many women claiming after his death to have been his plural wives.It is alleged Smith took his first plural wife, Fanny Alger, while in Kirland and then took an additional 30 to 40 wives in Nauvoo.There is historical consensus that he did involve himself in polygamy at some point, perhaps with as many as 50 wives, however the exact number is difficult to determine because of differing accounts and some statements made by witnesses many years after the fact
Edited sentence: In Nauvoo, Smith taught many new doctrines, which differed significantly from mainstream Christianity