1 Thessalonians 5:2
For you yourselves know well that the day of the Lord will come like a thief in the night.
2 Peter 3:10
But the day of the Lord will come like a thief, in which the heavens will pass away with a roar and the elements will be destroyed with fire, and the earth and the works that are in it will be burned up.
Revelation 3:3
Remember therefore what you have received and heard; keep it, and repent. But if you will not wake up, I will come like a thief, and you will not know at what hour I will come upon you.
Revelation 16:15
("Behold, I am coming like a thief! Blessed is he who stays awake and keeps his clothes with him, so that he may not go naked and be shamefully exposed.")
Matthew 24:42-44
Watch therefore, for you do not know on what day your Lord is coming.
Matthew 25:13
Therefore keep watch, for you know neither the day nor the hour.
Mark 13:34-35
It is like a man going on a journey, when he leaves his house and puts his servants in charge, each with his work, and commands the doorkeeper to be on the watch.
Luke 12:39-40
But know this, that if the owner of the house had known at what hour the thief was coming, he would not have allowed his house to be broken into.
1 Corinthians 1:8
who will also confirm you to the end, blameless in the day of our Lord Jesus Christ.