David O. McKay shared the following experience:

“One of the great influences upon my youth was the memorizing of that important saying: “My spirit will not dwell in an unclean tabernacle” ( Hel. 4:24). I recall other warnings. One came to me as a boy. I sat on a spring seat by the side of my father as we drove into Ogden. Just before we reached the bridge across the Ogden River, a man came out of a saloon on the north bank of the river. I recognized him. I liked him because I had seen him on the stage. But on that occasion he was under the influence of liquor and had been, I suppose, for several days.

“When he saw us, he broke down and cried and asked Father for 50 cents so that he could go back into the saloon for another drink. As we drove across the bridge my father said, “David, that man whom you just saw in that drunken state used to go with me to visit the members of the ward in their homes as a representative of the priesthood.” That was all my father said to me about the incident, but it was a very vivid warning to me about the effects of dissipation that I have never forgotten.”

“A Citizen Who Loves Justice and Hates Evil Is Better and Stronger Than a Battleship”
David O. McKay, Conference Report, October 1968, pp. 4-9