“Speaking of His Second Coming, the Lord said, ‘The hour and the day no man knoweth, neither the angels in heaven’ (D&C 49:7). He taught this with the parable of the fig tree. He said that when we see a fig tree putting forth leaves, we can tell that summer will soon come. Likewise, when we see the signs described in the scriptures, we can know that His coming is near. (See Matthew 24:32–33.)
The Lord gives these signs to help us. We can put our lives in order and prepare ourselves and our families for those things yet to come.
We have been warned of calamities and told to prepare for them, but we can also look forward to the coming of the Savior and be glad. The Lord said, ‘Be not troubled, for, when all these things [the signs] shall come to pass, ye may know that the promises which have been made unto you shall be fulfilled’ (D&C 45:35). He said those who are righteous when He comes will not be destroyed ‘but shall abide the day. And the earth shall be given unto them for an inheritance; … and their children shall grow up without sin. … For the Lord shall be in their midst, and his glory shall be upon them, and he will be their king and their lawgiver’ (D&C 45:57–59).”
"Chapter 43: Signs of the Second Coming," Gospel Principles, (2009)