SALT LAKE CITY -- It's a letter that's been viewed hundreds of thousands of times, and the LDS author who wrote it says he now faces excommunication from The Church of Jesus Christ of Latter-day Saints.

Jeremy Runnells wrote the popular piece: "letter to a CES [Church Education System] director."

In the letter, Runnells outlined his questions, concerns, and doubts about various LDS beliefs. Now, he claims the LDS Church's response was to challenge his membership.

"I asked questions, I shared my concerns, and I shared facts and information that are backed by the church's sources and the church's essays," Runnell said at an event in Salt Lake City. "So if sharing truth, and publicly, is in opposition to the church, then I think that's a problem."

Runnells' disciplinary council with his church leaders is scheduled for this Sunday, the same day a vigil is being organized for him in the event he is excommunicated.

FOX 13 News has reached out to the LDS Church for comment, but has yet to hear back from them.