SALT LAKE CITY (AP) — Mormon leaders are unveiling a new narrative book about the faith’s early history in the 1800s that follows a recent commitment to transparency by acknowledging the polygamous roots of the faith.

Leaders with The Church of Jesus Christ of Latter-day Saints said at a news conference Tuesday they hope book helps young faith members learn about early church history.

Mormon scholar Patrick Mason of Claremont Graduate University in California says the book doesn’t dwell on polygamy, but doesn’t skip over it either.

The book explains how Smith felt an urgency to install the practice despites the risks and his own reservations and how it caused conflict among leaders and wives. The practice has been outlawed since 1890.

The faith published an online essay in 2014 that provided a detailed account of the faith’s polygamous practices during the 1830s and 1840s.