Luke 12:40

Be ye also ready: for in an hour that ye think not the Son of man cometh.

Matthew 24:42

Watch therefore: for ye know not on what day your Lord cometh.

Matthew 24:44

Therefore be ye also ready; for in an hour that ye think not the Son of man cometh.

Matthew 25:13

Watch therefore, for ye know not the day nor the hour.

Mark 13:33-36

Take ye heed, watch and pray: for ye know not when the time is.

Luke 21:34-36

But take heed to yourselves, lest haply your hearts be overcharged with surfeiting, and drunkenness, and cares of this life, and that day come on you suddenly as a snare:

Romans 13:11

And this, knowing the season, that already it is time for you to awake out of sleep: for now is salvation nearer to us than when we first believed.

Romans 13:14

But put ye on the Lord Jesus Christ, and make not provision for the flesh, to fulfil the lusts thereof .

1 Thessalonians 5:6

so then let us not sleep, as do the rest, but let us watch and be sober.

2 Peter 3:12-14

looking for and earnestly desiring the coming of the day of God, by reason of which the heavens being on fire shall be dissolved, and the elements shall melt with fervent heat?

Revelation 19:7

Let us rejoice and be exceeding glad, and let us give the glory unto him: for the marriage of the Lamb is come, and his wife hath made herself ready.

Treasury of Scripture Knowledge

Summary

Be ye therefore ready also: for the Son of man cometh at an hour when ye think not.

Bible References

General references

Luke 21:34
But take heed to yourselves, lest haply your hearts be overcharged with surfeiting, and drunkenness, and cares of this life, and that day come on you suddenly as a snare:
Matthew 24:42
Watch therefore: for ye know not on what day your Lord cometh.
Matthew 25:13
Watch therefore, for ye know not the day nor the hour.
Mark 13:33
Take ye heed, watch and pray: for ye know not when the time is.
Romans 13:11
And this, knowing the season, that already it is time for you to awake out of sleep: for now is salvation nearer to us than when we first believed.
1 Thessalonians 5:6
so then let us not sleep, as do the rest, but let us watch and be sober.
2 Peter 3:12
looking for and earnestly desiring the coming of the day of God, by reason of which the heavens being on fire shall be dissolved, and the elements shall melt with fervent heat?
Revelation 19:7
Let us rejoice and be exceeding glad, and let us give the glory unto him: for the marriage of the Lamb is come, and his wife hath made herself ready.

American Standard Version Public Domain