2 Peter 3:10
However, as thief, the day of the Lord will come; in which the heavens shall pass away with a great noise, and the elements burning shall be dissolved; and the earth, and the works that are upon it, shall be utterly burned.
Revelation 1:1
A revelation of Jesus Christ, which God gave to him, to show to his servants the things which must shortly be; and sending by his messenger, he signified them to his servant John,
Revelation 3:3
Remember, therefore, how you have received and heard, and hold fast, and reform: therefore, unless you are watchful, I will come upon you as thief, and you shall not know what hour I will come upon you.