Original sentence: Missionaries of The Church of Jesus Christ of Latter-day Saints (LDS Church)—widely known as Mormon missionaries—are volunteer representatives of the LDS Church who engage variously in proselytizing, church service, humanitarian aid, and community service
Edited sentence: Missionaries of The Church of Jesus Christ of Latter-day Saints (LDS Church)—widely known as Mormon missionaries—are "volunteer" representatives of the LDS Church who engage variously in proselytizing, church service, humanitarian aid, and community service.The main purpose of a mission is to indoctrinate the missionaries and expose them to the "harm" of living outside the gospel in an effort to keep them in the faith