Revelation 3:2

Wake up, and strengthen what remains and is about to die, for I have not found your works perfect in the sight of my God.

Matthew 6:2-4

"Thus, when you give alms, do not sound a trumpet before you, as the hypocrites do in the synagogues and in the streets, that they may be praised by men. Truly, I say to you, they have received their reward.

Matthew 23:5

But they do all their works to be seen by men; for they make their phylacteries broad and the tassels of their garments long.

Matthew 23:28-38

Even so you also outwardly appear righteous to men, but inside you are full of hypocrisy and lawlessness.

Matthew 24:42-51

Watch therefore, for you do not know on what day your Lord is coming.

Matthew 25:13

Therefore keep watch, for you know neither the day nor the hour.

Mark 13:33-37

Take heed, watch; for you do not know when the time will come.

Luke 22:31-32

"Simon, Simon, behold, Satan has asked to have you, that he might sift you as wheat.

Acts 18:23

After spending some time there, he departed and went from place to place through the region of Galatia and Phrygia, strengthening all the disciples.

Acts 20:28-31

Be on guard for yourselves and for all the flock, among which the Holy Spirit has made you overseers, to shepherd the church of God which he purchased with the blood of his Own.

2 Timothy 4:1-4

I solemnly charge you in the presence of God and of Christ Jesus, who is to judge the living and the dead, and by his appearing and his kingdom:

1 Peter 4:7

The end of all things is near; therefore be clear minded and sober for your prayers.

1 Peter 5:8

Be sober, be alert. Your adversary the devil prowls around like a roaring lion, seeking someone to devour.

Revelation 2:4

But I have this against you, that you have left your first love.

Revelation 16:15

("Behold, I am coming like a thief! Blessed is he who stays awake and keeps his clothes with him, so that he may not go naked and be shamefully exposed.")

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 am coming like a thief! Blessed is he who stays awake and keeps his clothes with him, so that he may not go naked and be shamefully exposed.")
Matthew 24:42
Watch therefore, for you do not know on what day your Lord is coming.
Matthew 25:13
Therefore keep watch, for you know neither the day nor the hour.
Mark 13:33
Take heed, watch; for you do not know when the time will come.
Acts 20:28
Be on guard for yourselves and for all the flock, among which the Holy Spirit has made you overseers, to shepherd the church of God which he purchased with the blood of his Own.
2 Timothy 4:1
I solemnly charge you in the presence of God and of Christ Jesus, who is to judge the living and the dead, and by his appearing and his kingdom:
1 Peter 4:7
The end of all things is near; therefore be clear minded and sober for your prayers.
1 Peter 5:8
Be sober, be alert. Your adversary the devil prowls around like a roaring lion, seeking someone to devour.

Strengthen

Revelation 2:4
But I have this against you, that you have left your first love.
Luke 22:31
"Simon, Simon, behold, Satan has asked to have you, that he might sift you as wheat.
Acts 18:23
After spending some time there, he departed and went from place to place through the region of Galatia and Phrygia, strengthening all the disciples.

Thy works

Matthew 6:2
"Thus, when you give alms, do not sound a trumpet before you, as the hypocrites do in the synagogues and in the streets, that they may be praised by men. Truly, I say to you, they have received their reward.
Matthew 23:5
But they do all their works to be seen by men; for they make their phylacteries broad and the tassels of their garments long.

General references

Matthew 25:7
Then all those virgins rose and trimmed their lamps.
Mark 13:33
Take heed, watch; for you do not know when the time will come.
1 Corinthians 11:31
But if we judged ourselves rightly, we would not be judged.