Matthew 24:36-44
36 “But of that [exact] day and hour no one knows, not even the angels of heaven, nor the Son [in His humanity], but the Father alone. 37 For the coming of the Son of Man (the Messiah) will be just like the days of Noah. 38 For as in those days before the flood they were eating and drinking, marrying and giving in marriage, until the [very] day when Noah entered the ark, 39 and they did not know or understand until the flood came and swept them all away; so will the coming of the Son of Man be [unexpected judgment]. 40 At that time two men will be in the field; one will be taken [for judgment] and one will be left. 41 Two women will be grinding at the mill; one will be taken [for judgment] and one will be left. 42 “So be alert [give strict attention, be cautious and active in faith], for you do not know which day [whether near or far] your Lord is coming. 43 But understand this: If the head of the house had known what time of the night the thief was coming, he would have been on the alert and would not have allowed his house to be broken into. 44 Therefore, you [who follow Me] must also be ready; because the Son of Man is coming at an hour when you do not expect Him.
Mark 13:32-37
32 But of that [exact] day or hour no one knows, not even the angels in heaven, nor the Son [in His humanity], but the Father alone. 33 “Be on guard and stay constantly alert [and pray]; for you do not know when the appointed time will come. 34 It is like a man away on a journey, who when he left home put his servants in charge, each with his particular task, and also ordered the doorkeeper to be continually alert. 35 Therefore, be continually on the alert—for you do not know when the master of the house is coming, whether in the evening, or at midnight, or when the rooster crows, or in the morning— 36 [stay alert,] in case he should come suddenly and unexpectedly and find you asleep and unprepared. 37 What I say to you I say to everyone, ‘Be on the alert [stay awake and be continually cautious]!’”