Joshua 8:3

So Joshua set out with all the people of war to go up against Ai; then Joshua chose thirty thousand valiant men, and sent them out at night.

Matthew 24:39

and they did not know or understand until the flood came and swept them all away; so will the coming of the Son of Man be [unexpected judgment].

Matthew 24:50

the master of that servant will come on a day when he does not expect him and at an hour of which he is not aware,

Matthew 25:6

But at midnight there was a shout, ‘Look! The bridegroom [is coming]! Go out to meet him.’

1 Thessalonians 5:2

For you yourselves know perfectly well that the day of the [return of the] Lord is coming just as a thief [comes unexpectedly and suddenly] in the night.

2 Peter 3:10

But the day of the Lord will come like a thief, and then the heavens will vanish with a [mighty and thunderous] roar, and the [material] elements will be destroyed with intense heat, and the earth and the works that are on it will be burned up.

Treasury of Scripture Knowledge

Summary

So Joshua arose, and all the people of war, to go up against Ai: and Joshua chose out thirty thousand mighty men of valour, and sent them away by night.

General references

Bible References

By night

Matthew 24:39
and they did not know or understand until the flood came and swept them all away; so will the coming of the Son of Man be [unexpected judgment].
Matthew 25:6
But at midnight there was a shout, ‘Look! The bridegroom [is coming]! Go out to meet him.’
1 Thessalonians 5:2
For you yourselves know perfectly well that the day of the [return of the] Lord is coming just as a thief [comes unexpectedly and suddenly] in the night.
2 Peter 3:10
But the day of the Lord will come like a thief, and then the heavens will vanish with a [mighty and thunderous] roar, and the [material] elements will be destroyed with intense heat, and the earth and the works that are on it will be burned up.

General references

Joshua 8:11
Then all the fighting men who were with him went up and advanced and arrived in front of the city, and camped on the north side of Ai. Now there was a ravine between them and Ai.