The ever-expanding tally of temples under President Russell M. Nelson is truly staggering.

Since taking the helm of The Church of Jesus Christ of Latter-day Saints, he has announced 185 — more than half — of the faith’s global total of 367 planned or existing temples.

At the recently completed General Conference, the 100-year-old religious leader explained the reason for the building blitz rather succinctly: God commanded it, he declared, because “the Savior is coming again.”

Historian Benjamin Park sees other forces at play as well. In a recent piece for The Salt Lake Tribune, titled “Russell Nelson’s billion-dollar gamble,” he points to the millions spent on each temple as among the faith’s justifications for the billions it has in its financial reserves.

Even more, top church leaders view these relatively lavish buildings, with their promises of eternal blessings, as a way to cement Latter-day Saints in the faith. “If we build them,” the thinking goes, “they will stick.”

On this week’s show, Park, author of “American Zion: A New History of Mormonism,” discusses the church’s temple frenzy — how it compares to the past, what it means in the present, and what it may portend for the faith’s future.