Matthew 24:40

Then there shall be two in the field, the one shall be taken and the other left:

Matthew 24:50-51

the lord of that servant will come in a day when he doth not expect him, and in an hour which he knows not,

1 Thessalonians 5:2-3

for ye yourselves know full well, that the day of the Lord cometh like a thief in the night.

Treasury of Scripture Knowledge

Summary

But God shall shoot at them with an arrow; suddenly shall they be wounded.

Bible References

Suddenly

Matthew 24:40
Then there shall be two in the field, the one shall be taken and the other left:
1 Thessalonians 5:2
for ye yourselves know full well, that the day of the Lord cometh like a thief in the night.