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Thomas S. Monson, president of The Church of Jesus Christ of Latter-day Saints, announced the age change for full-time missionary service for young men and women last October.

During a press conference following the announcement, Elder Jeffrey R. Holland, a member of the Quorum of the Twelve, happily stated that he was “bordering on the giddy here with this announcement.”

Elder Holland then went on to discuss the impact of the announcement.

“We expect that with this new option the number will increase steadily over the coming months — and perhaps will grow dramatically next spring after high school graduations.”

This proved to be true, with LDS missionary applications jumping 471 percent shortly after the announcement. And the numbers have continued to grow, as President Monson announced this April during general conference.

“We have 65,634 full-time missionaries serving, with over 20,000 more who have received their calls but who have not yet entered a Missionary Training Center and over 6,000 more in the interview process with their bishops and stake presidents,” President Monson said.

As the number of missionaries has grown, so has the number of YouTube videos featuring young men and young women opening their calls. Since President Monson’s October announcement, the excitement surrounding mission calls has been increasingly shared through social media.

Here are 14 of those viral videos we have gathered over the past few months, including videos recommended by our Facebook fans.

107 members of the Pleasant Grove High School class of 2013 open mission calls

Mission call opening: Brother and sister called to serve

Davis High School missionaries from the 2012 graduating class

Two cousins, one mission

Called to serve: Lone Peak High School class of 2012

West Jordan High School 2012 Jaguar missionaries

A cool way to open a mission call

Dude ... I switched your mission call

Alta class of 2012 missionaries

Two sisters, two mission calls

Titan missionaries from Olympus High School class of 2012 opening the mission call

Maple Mountain High School class of 2012 called to serve

Emily's mission call

Missionaries from the Holladay Stake in Salt Lake City opening their calls