"When Jesus said, “Do not lay up for yourselves treasures on earth” (Matthew 6:19), the term “lay-up” did not simply speak of having possessions, but of your possessions having you. “Lay up” could be better translated “hoard” or “stockpile.” - Greg Laurie

Theologically what are we to make of a church that religiously taxes its adherents, demands their labour for a lay clergy and then banks its money only to watch it accrue? 

Is it justifiable?

Most actively participating and paying Mormons won’t question it.  They’ll call it good stewardship and an indication of the care with which the LDS Church Corporations treat its donor revenue.    For others, including my guest, former Salt Lake City tax attorney Mark Barnes, there are more than legal reasons to question the LDS church’s outsized fortune.