Mark 14:38

Watch, and pray, all of you, lest you enter into temptation. The spirit indeed is willing, but the flesh is weak.

Matthew 26:41

Watch and pray, lest you enter into temptation. The spirit is, willing, but the flesh is weak.

Matthew 24:42

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

Mark 14:34

And he said to them: My soul is encompassed with sorrow, even to death; remain here, and watch.

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.

Luke 22:40

And when he came to the place, he said to them: Pray, that you enter not into temptation.

Luke 22:46

And he said to them: Why do you sleep? Arise and pray, lest you enter into temptation.

Romans 7:18-25

For I know that in me, that is, in my flesh, dwells no good; for to will is present with me; but to perform that which is good, I find not.

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.

Matthew 6:13

And lead us not into temptation, but deliver us from the Evil One.

Matthew 25:13

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

1 Corinthians 16:13

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

Galatians 5:17

For the desire of the flesh is against the Spirit, and the desire of the Spirit is against flesh; and these are opposed, the one to the other, so that you can not do what you would.

Philippians 2:12

So, then, my beloved, as you have always obeyed, not as in my presence only, but now much more in my absence, work out your own salvation with fear and trembling;

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 3:10

Because you have kept the word of my patience, I also will keep you from the hour of trial that is about to come on the whole world, to try those who dwell on the earth.

Treasury of Scripture Knowledge

Summary

Watch ye and pray, lest ye enter into temptation. The spirit truly is ready, but the flesh is weak.

General references

Bible References

The spirit

Romans 7:18
For I know that in me, that is, in my flesh, dwells no good; for to will is present with me; but to perform that which is good, I find not.
Galatians 5:17
For the desire of the flesh is against the Spirit, and the desire of the Spirit is against flesh; and these are opposed, the one to the other, so that you can not do what you would.
Philippians 2:12
So, then, my beloved, as you have always obeyed, not as in my presence only, but now much more in my absence, work out your own salvation with fear and trembling;

General references

Mark 13:33
Take heed, watch and pray: for you know not when the time is.