FWIW, I don’t think there is a “fourfold mission of the Church”. I’m not saying there shouldn’t be, but I think the Church’s own statements fall far short of how we interpret them. To make this a larger discussion, I’m creating a new thread on the topic.
In the meantime, may Thomas S Monson live in peace and rest in peace when his time comes. I have complete love and respect for the man, his love, devotion, and sacrifice for the cause he believes in so strongly.