I came across this quote from Brigham Young years ago and was just reminded of it in an email I just got.
He made it in 1859.
It makes me wonder if in fact Brigham Young understood the "three watches" doctrine and the fact that the first laborers would be returning;
"Pretty soon you will see Temples reared up, and the sons of Jacob will enter into the Temples of the Lord. . . .
There will be strangers in your midst walking with you, talking with you;
they will enter your houses and eat and drink with you; go to meeting with you, and begin to open your minds, as the Saviour did to the two disciples who walked out in the country in the days of old. . . .
They will expound the Scriptures to you, and open your minds, and teach you the time of Salvation;
they will use the keys of the holy Priesthood and unlock the door of knowledge, to let you look into the place of truth.
You will exclaim. That is all plain: Why did I not understand it before? And you will begin to feel your hearts burn within you as they walk and talk with you."