The day is coming when Jesus returns on the Last Day for the Day of Judgment. However, he says: “But of that day and hour knoweth no man, no, not the angels of heaven, but my Father only” (Matthew 24:36).
“Take ye heed, watch and pray: for ye know not when the time is” (Mark 13:33).
“For as the lightning cometh out of the east, and shineth even unto the west; so shall also the coming of the Son of man be” (Matthew 24:27).
“Watch therefore: for ye know not what hour your Lord doth come” (Matthew 24:42).
“Behold, I come as a thief. Blessed is he that watcheth, and keepeth his garments, lest he walk naked, and they see his shame” (Revelation 16:15).