Matthew 24:42

"Watch, therefore, for you know not at what hour your Lord is coming.

Matthew 25:13

Watch, therefore, for you know neither the day nor the hour.

Luke 21:36

Watch, therefore, and pray at all times, that you may be accounted worthy to escape all these things that shall come to pass, and to stand before the Son of man.

Matthew 24:44

For this reason, be you also ready; for at an hour in which you think not, the Son of man comes.

1 Corinthians 16:13

Be watchful, stand fast in the faith, be men, be resolute.

1 Thessalonians 5:6

Therefore, let us not sleep, as do others, but let us watch and be sober.

Matthew 24:36

But of that day and hour no one knows, not the angels of heaven, but my Father only.

Revelation 16:15

Behold, I come as a thief: blessed is he that watches, and keeps his garments, that he may not walk naked, and that men may not see his nakedness.

Matthew 26:38-41

Then Jesus said to them: My soul is encompassed with sorrow even to death; remain here, and watch with me.

Mark 13:33-37

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

Luke 12:35-40

Let your loins be girded, and your lamps burning;

Romans 13:11

And do this, because you know the time, that the hour has already come when we should awake out of sleep; for now is our salvation nearer than when we believed:

1 Peter 4:7

But the end of all things is at hand; be sober-minded, therefore, and watchful, that you may pray.

1 Peter 5:8

Be sober, be watchful: for your adversary, the devil, like a roaring lion, walks about, seeking whom he may devour.

Revelation 3:2-3

Be watchful, and strengthen the things that remain, which are about to die; for I have not found your works perfect before God.

Treasury of Scripture Knowledge

Summary

Watch therefore: for ye know not what hour your Lord doth come.

Bible References

For

Matthew 24:36
But of that day and hour no one knows, not the angels of heaven, but my Father only.
Mark 13:33
Take heed, watch and pray: for you know not when the time is.

General references

Matthew 24:36
But of that day and hour no one knows, not the angels of heaven, but my Father only.
Matthew 25:13
Watch, therefore, for you know neither the day nor the hour.
Mark 13:33
Take heed, watch and pray: for you know not when the time is.
Luke 12:40
Be you, therefore, ready also; for at an hour when you think not, the Son of man comes.