Matthew 24:39
and knew not, until the flood came, and took them all away, so also will be the coming of the Son of man.
Matthew 24:50
the lord of that servant will come in a day when he looketh not for it, and at an hour when he is not aware;
Matthew 25:6
But at midnight there was a cry, Lo! the bridegroom! go out to meet him.
1 Thessalonians 5:2
for ye yourselves know full well, that the day of the Lord so cometh 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 will pass away with a great noise, and the elements will melt with fervent heat, and the earth and the works that are therein will be burned up.