Matthew 24:39
and knew not, till the flood came and took them all away: so shall be the coming of the Son of man.
Matthew 24:50
the master of that servant will come in a day in which he looks not for him, and at an hour which he knows not,
Matthew 25:6
And at midnight a cry was made: Behold, the bridegroom comes! Go you out to meet him.
1 Thessalonians 5:2
for you yourselves know perfectly that the day of the Lord so comes as a thief in the night:
2 Peter 3:10
But the day of the Lord will come as a thief, in which the heavens shall pass away with a great noise, and the elements shall melt with fervent heat, and the earth, and the works that are on it, shall be burned up.