by night
Matthew 24:39
and they did not know until the flood came and swept them all away, so will be the coming of the Son of man.
Matthew 24:50
the master of that servant will come on a day when he does not expect him and at an hour he does not know,
Matthew 25:6
But at midnight there was a cry, `Behold, the bridegroom! Come out to meet him.'
1 Thessalonians 5:2
For you yourselves know well that the day of the Lord will come like a thief in the night.
2 Peter 3:10
But the day of the Lord will come like a thief, and then the heavens will pass away with a loud noise, and the elements will be dissolved with fire, and the earth and the works that are upon it will be burned up.