Matthew 24:44

Therefore be ye also ready; for at an hour when ye think not, the Son of man cometh.

Luke 21:34

But take heed to yourselves, lest at any time your hearts be weighed down with surfeiting and drunkenness and worldly cares, and that day come upon you unawares.

1 Thessalonians 5:3

When they are saying, Peace and safety; then doth sudden destruction come 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
Therefore be ye also ready; for at an hour when ye think not, the Son of man cometh.
Luke 21:34
But take heed to yourselves, lest at any time your hearts be weighed down with surfeiting and drunkenness and worldly cares, and that day come upon you unawares.
1 Thessalonians 5:3
When they are saying, Peace and safety; then doth sudden destruction come upon them, as travail upon a woman with child; and they shall not escape.

General references

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.