Matthew 24:44

for the Son of man cometh at a time that ye think not of.

Luke 21:34

Take heed to yourselves, least at any time your hearts be overcharged with surfeiting and drunkenness, and the cares of life, and so that day should come upon you unawares:

1 Thessalonians 5:3

And when they shall say, Peace and safety, then sudden destruction cometh upon them, as travail upon a woman with child; and they shall not escape.

Treasury of Scripture Knowledge

Summary

And there came against Gibeah ten thousand chosen men out of all Israel, and the battle was sore: but they knew not that evil was near them.

General references

Bible References

Knew not

Matthew 24:44
for the Son of man cometh at a time that ye think not of.
Luke 21:34
Take heed to yourselves, least at any time your hearts be overcharged with surfeiting and drunkenness, and the cares of life, and so that day should come upon you unawares:
1 Thessalonians 5:3
And when they shall say, Peace and safety, then sudden destruction cometh upon them, as travail upon a woman with child; and they shall not escape.

General references

Matthew 24:39
and knew not of it till the deluge came and took them all away; so shall be also the coming of the Son of man.