1 Thessalonians 5:2
2 For you yourselves are fully aware that ythe day of the Lord will come like a thief in the night.
2 Peter 3:10
10 But zthe day of the Lord will come like a thief, and then athe heavens will pass away with a roar, and bthe heavenly bodies1 will be burned up and dissolved, and the earth and the works that are done on it will be exposed.2
Revelation 3:3
3 mRemember, then, what you received and heard. Keep it, and repent. If you will not wake up, nI will come olike a thief, and you will not know at what hour I will come against you.