1 Thessalonians 5:2

for ye your selves know perfectly, that the day of the Lord shall come even as a thief in the night.

2 Peter 3:10

Nevertheless, the day of the Lord will come as a thief in the night, in the which day, the heavens shall perish with terrible noise, and the elements shall melt with heat, and the earth, with the works that are therein, shall burn.

Revelation 3:3

Remember, therefore, how thou hast received and heard, and hold fast, and repent. If you shalt not watch, I will come on you as a thief, and thou shalt not know what hour I will come upon thee.

Revelation 16:15

"Behold I come as a thief. Happy is he that watcheth and keepeth his garments; Lest he be found naked, and men see his filthiness."

Matthew 24:42-44

Wake, therefore, because ye know not what hour your master will come.

Matthew 25:13

Look that ye watch therefore, for ye know neither the day nor yet the hour, when the son of man shall come.

Mark 13:34-35

As a man which is gone into a strange country and hath left his house, and given authority to his servants, and to every man his work, and commanded the porter to watch.

Luke 12:39-40

This shall ye understand, that if the good man of the house knew what hour the thief would have come, he would surely have watched: and not suffer his house to be broken up.

Jeremiah 23:20

And the wrath of the LORD shall not turn away again, until he perform and fulfils the thought of his heart. And in the latter days ye shall know his meaning."

1 Corinthians 1:8

which shall strengthen you unto the end, that ye may be blameless in the day of our Lord Jesus Christ.

Treasury of Scripture Knowledge

Summary

For yourselves know perfectly that the day of the Lord so cometh as a thief in the night.

General references

Bible References

Know

Jeremiah 23:20
And the wrath of the LORD shall not turn away again, until he perform and fulfils the thought of his heart. And in the latter days ye shall know his meaning."

General references

Matthew 24:36
But of that day and hour knoweth no man: no not the angels of heaven, but my father only.
Luke 12:39
This shall ye understand, that if the good man of the house knew what hour the thief would have come, he would surely have watched: and not suffer his house to be broken up.
Luke 17:27
They ate, they drank, they married wives and were married even unto the same day that Noah went into the ark, and the flood came, and destroyed them all.