Matthew 24:36-51 , At the end of this chapter, the Savior is discoursing on the time of his Second Coming. This proceeds the three parables about the end of times: the virgins, the talents, and the sheep and goats. In JST-Matthew 1:39-40 , it talks of how the elect will see the signs of his coming, but that ultimately, no one knows when that day shall come except that we are told that it will come when we do not expect to see it. It will be "business as usual" until the day of His Coming. That is humbling because today is a day of "business as usual." And so what Christ is saying is that it will be a day, just like today, when He comes again. Vs. 48 sums up the whole of it: "Therefore be ye also ready, for in such an hour as ye think not, the Son of Man cometh."
“Wherefore, I said unto you, feast upon the words of Christ; for behold, the words of Christ will tell you all things what ye should do.” – 2 Nephi 32:3, The Book of Mormon