Matthew 24:42

'Watch ye therefore, because ye have not known in what hour your Lord doth come;

Matthew 25:13

'Watch therefore, for ye have not known the day nor the hour in which the Son of Man doth come.

Luke 21:36

watch ye, then, in every season, praying that ye may be accounted worthy to escape all these things that are about to come to pass, and to stand before the Son of Man.'

Matthew 24:44

because of this also ye, become ye ready, because in what hour ye do not think, the Son of Man doth come.

1 Corinthians 16:13

Watch ye, stand in the faith; be men, be strong;

1 Thessalonians 5:6

so, then, we may not sleep as also the others, but watch and be sober,

Matthew 24:36

And concerning that day and the hour no one hath known -- not even the messengers of the heavens -- except my Father only;

Revelation 16:15

lo, I do come as a thief; happy is he who is watching, and keeping his garments, that he may not walk naked, and they may see his unseemliness,' --

Matthew 26:38-41

then saith he to them, 'Exceedingly sorrowful is my soul -- unto death; abide ye here, and watch with me.'

Mark 13:33-37

Take heed, watch and pray, for ye have not known when the time is;

Luke 12:35-40

'Let your loins be girded, and the lamps burning,

Romans 13:11

And this, knowing the time, that for us, the hour already is to be aroused out of sleep, for now nearer is our salvation than when we did believe;

1 Peter 4:7

And of all things the end hath come nigh; be sober-minded, then, and watch unto the prayers,

1 Peter 5:8

Be sober, vigilant, because your opponent the devil, as a roaring lion, doth walk about, seeking whom he may swallow up,

Revelation 3:2-3

become watching, and strengthen the rest of the things that are about to die, for I have not found thy works fulfilled 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 the hour no one hath known -- not even the messengers of the heavens -- except my Father only;
Mark 13:33
Take heed, watch and pray, for ye have not known when the time is;

General references

Matthew 24:36
And concerning that day and the hour no one hath known -- not even the messengers of the heavens -- except my Father only;
Matthew 25:13
'Watch therefore, for ye have not known the day nor the hour in which the Son of Man doth come.
Mark 13:33
Take heed, watch and pray, for ye have not known when the time is;
Luke 12:40
and ye, then, become ye ready, because at the hour ye think not, the Son of Man doth come.'