Revelation 3.3 Says You Can Known When Jesus Returns

“So you, too, must keep watch! For you do not know the day or hour of my return." (Matt. 25.13)

Who is this being spoken to? It is being spoken to the 5 unwise Christians who were not watchful. If they were watchful, therefore, they could have known. Even those who are watchful don't necessarily know; but being watchful is a prerequisite to knowing when He returns.

"Remember therefore how thou hast received and heard, and hold fast, and repent. If therefore thou shalt not watch, I will come on thee as a thief, and thou shalt not know what hour I will come upon thee." (Rev. 3.3)