Matthew 24:42

Watch therefore; for ye know not what hour your Lord comes.

Matthew 25:13

Watch, therefore, for ye know not the day, neither the hour, in which the Son of man comes.

Luke 21:36

Watch therefore, in all time praying, that ye be deemed worthy to escape all these about to be, and to stand before the Son of man.

Matthew 24:44

Therefore be ye also prepared: for what hour ye think not, the Son of man comes.

1 Corinthians 16:13

Watch ye, stand in the faith, be manly, be strengthened..

1 Thessalonians 5:6

Therefore let us not sleep, as also the rest; but let us watch and be sober.

Matthew 24:36

And concerning that day and hour, none know, nor the messengers of the heavens, except my Father only.

Revelation 16:15

(Behold, I come as a thief. Happy he watching, and keeping his garments, lest he walk naked, and they see his shame.)

Matthew 26:38-41

Then says he to them, My soul is sorely grieved, even to death: remain here, and watch ye with me.

Mark 13:33-37

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

Luke 12:35-40

Let your loins be girded about, and your lights burning;

Romans 13:11

And this, knowing the time, that already the hour ye should be awakened out of sleep: for now our salvation nearer than when we believed.

1 Peter 4:7

And the end of all has drawn near: be ye therefore of sound mind, and live abstemiously in prayers.

1 Peter 5:8

Be abstemious, watch; for your adversary the accuser, as a roaring lion, walks around, seeking whom he might swallow down:

Revelation 3:2-3

Be watching, and make firm the remaining things, which are about to die: For I have not found thy works perfected 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
And concerning that day and hour, none know, nor the messengers of the heavens, except my Father only.
Mark 13:33
See, watch and pray: for ye know not when the time is.

General references

Matthew 24:36
And concerning that day and hour, none know, nor the messengers of the heavens, except my Father only.
Matthew 25:13
Watch, therefore, for ye know not the day, neither the hour, in which the Son of man comes.
Mark 13:33
See, watch and pray: for ye know not when the time is.
Luke 12:40
And be ye therefore ready: for in the time which ye think not the Son of man is coming.