Watch, therefore, for ye know neither the day nor the hour
Doctrine and Covenants 133:11
Wherefore, if ye believe me, ye will labor while it is called today.
Doctrine and Covenants 64:25
And now, my brethren, I wish from the inmost part of my heart, yea, with great anxiety even unto pain, that ye would hearken unto my words, and cast off your sins, and not procrastinate the day of your repentance
And now, as I said unto you before, as ye have had so many witnesses, therefore, I beseech of you that ye do not procrastinate the day of your repentance until the end;
"Acquire and store a reserve of food and supplies that will sustain life. . . . As long as I can remember, we have been taught to prepare for the future and to obtain a year's supply of necessities. I would guess that the years of plenty have almost universally caused us to set aside this counsel. I believe the time to disregard this counsel is over. With events in the world today, it must be considered with all seriousness."
Elder L. Tom Perry, "If Ye Are Prepared Ye Shall Not Fear," Ensign, Nov. 1995, 36.