Revelation 3:2

Be vigilant and strengthen the things which remain, which are ready to die; for I have not found thy works complete before God.

Matthew 6:2-4

Therefore when thou givest alms, sound not a trumpet before thee, as the hypocrites do, in the synagogues, and in the streets, that they may have glory from men. Verily I say unto you, They receive their reward.

Matthew 23:5

And all their works they do to be seen of men: they make their phylacteries broad, and deepen the fringes of their garments,

Matthew 23:28-38

And just so, ye without indeed appear to men righteous, but within ye are full of hypocrisy and iniquity.

Matthew 24:42-51

Watch therefore: for ye know not at what hour your Master cometh.

Matthew 25:13

Watch therefore, for ye know not the day nor the hour in which the Son of man cometh.

Mark 13:33-37

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

Luke 22:31-32

And the Lord said, Simon, Simon, lo! Satan hath earnestly sought you, that he might sift you as wheat:

Acts 18:23

And after making some stay, he departed, passing in regular order through the Galatian district, and Phrygia, confirming all the disciples.

Acts 20:28-31

Take heed therefore to yourselves, and to all the flock, over which the Holy Ghost hath made you bishops, to feed as shepherds the church of God, which he purchased with his own blood.

2 Timothy 4:1-4

I ADJURE thee therefore before God, and the Lord Jesus Christ, who shall judge the living and the dead at his appearing and his kingdom;

1 Peter 4:7

But the end of all things is near: be ye therefore sober-minded, and vigilant in prayers.

1 Peter 5:8

Be sober, be vigilant; for your adversary the devil, as a roaring lion, prowleth around, seeking whom he may devour:

Revelation 2:4

Yet have I a charge against thee, that thou art gone back from thy first love.

Revelation 16:15

Behold, I come as a thief. Blessed is he who watcheth, and keepeth his garments, that he walk not about naked, and men see his shame.

Treasury of Scripture Knowledge

Summary

Be watchful, and strengthen the things which remain, that are ready to die: for I have not found thy works perfect before God.

Bible References

Watchful

Revelation 16:15
Behold, I come as a thief. Blessed is he who watcheth, and keepeth his garments, that he walk not about naked, and men see his shame.
Matthew 24:42
Watch therefore: for ye know not at what hour your Master cometh.
Matthew 25:13
Watch therefore, for ye know not the day nor the hour in which the Son of man cometh.
Mark 13:33
Take ye heed, watch, and pray; for ye know not when the time is.
Acts 20:28
Take heed therefore to yourselves, and to all the flock, over which the Holy Ghost hath made you bishops, to feed as shepherds the church of God, which he purchased with his own blood.
2 Timothy 4:1
I ADJURE thee therefore before God, and the Lord Jesus Christ, who shall judge the living and the dead at his appearing and his kingdom;
1 Peter 4:7
But the end of all things is near: be ye therefore sober-minded, and vigilant in prayers.
1 Peter 5:8
Be sober, be vigilant; for your adversary the devil, as a roaring lion, prowleth around, seeking whom he may devour:

Strengthen

Revelation 2:4
Yet have I a charge against thee, that thou art gone back from thy first love.
Luke 22:31
And the Lord said, Simon, Simon, lo! Satan hath earnestly sought you, that he might sift you as wheat:
Acts 18:23
And after making some stay, he departed, passing in regular order through the Galatian district, and Phrygia, confirming all the disciples.

Thy works

Matthew 6:2
Therefore when thou givest alms, sound not a trumpet before thee, as the hypocrites do, in the synagogues, and in the streets, that they may have glory from men. Verily I say unto you, They receive their reward.
Matthew 23:5
And all their works they do to be seen of men: they make their phylacteries broad, and deepen the fringes of their garments,

General references

Matthew 25:7
Then all these virgins arose, and set about trimming their lamps.
Mark 13:33
Take ye heed, watch, and pray; for ye know not when the time is.
1 Corinthians 11:31
For if we thoroughly judged ourselves, we should not be judged of the Lord.