1 Thessalonians 5:2
For you yourselves know perfectly well that the day of the Lord comes like a thief in the night.
2 Peter 3:10
The day of the Lord will come like a thief--it will be a day on which the heavens will pass away with a rushing noise, the elements be destroyed in the fierce heat, and the earth and all the works of man be utterly burnt up.
Revelation 3:3
Be mindful, therefore, of the lessons you have received and heard. Continually lay them to heart, and repent. If, however, you fail to rouse yourself and keep awake, I shall come upon you suddenly like a thief, and you will certainly not know the hour at which I shall come to judge you.
Revelation 16:15
("I am coming like a thief. Blessed is the man who keeps awake and guards his raiment for fear he walk about ill-clad, and his uncomeliness become manifest.")
Matthew 24:42-44
Be on the alert therefore, for you do not know the day on which your Lord is coming.
Matthew 25:13
"Keep awake therefore; for you know neither the day nor the hour.
Mark 13:34-35
It is like a man living abroad who has left his house, and given the management to his servants--to each one his special duty--and has ordered the porter to keep awake.
Luke 12:39-40
Of this be sure, that if the master of the house had known what time the robber was coming, he would have kept awake and not have allowed his house to be broken into.
1 Corinthians 1:8
who will also keep you stedfast to the very End, so that you will be free from reproach on the day of our Lord Jesus Christ.