Even before Brigham Young was baptized, he and his brother-in-law John P. Greene went to Canada to meet with Brigham's brother, Joseph Young, a Methodist minister. Brigham told Joseph that the Lord had spoken through a prophet in the latter-days.
Brigham and his brother, Joseph were baptized and went back to Canada. "We traveled two hundred and fifty miles in snow a foot and a half deep, with a foot of mud under it. We traveled, preached and baptized 45 people in the dead of winter." Brigham Young
"I wanted to thunder and roar out the Gospel to the nations. It burned in my bones like fire pent up, so I [began] to preach . . . Nothing would satisfy me but to cry abroad in the world, what the Lord was doing in the latter days." Brigham Young.