Mark 14:38

Be alert and pray, so that you do not give in to temptation. The spirit of a person is truly willing [i.e., to do a certain thing], but his physical nature is [often] too weak [to carry it out]."

Matthew 26:41

Be alert and pray, so that you do not give in to temptation; the spirit [of a person] is truly willing [i.e., to do a certain thing], but his physical nature is [often too] weak [to carry it out]."

Matthew 24:42

Therefore be alert, for you do not know on what day the Lord will come.

Mark 14:34

He said to them, "My soul is extremely grieved, even to the point where I could die. Stay here and be alert [i.e., in prayer]."

Luke 21:36

But you should be alert at all times, offering earnest prayers, so that you will be strong enough to escape all these things that will happen, and to appear [acceptable] in front of the Son of man [on that day]."

Luke 22:40

And when He got there He said to them, "Pray that you do not give in [i.e., to the devil] under trials."

Luke 22:46

So, He said to them, "Why were you sleeping? Get up and pray so you do not give in [to the devil] under trials."

Romans 7:18-25

For I know that nothing good lives in me, that is, in my flesh, for the desire to do good is present in my heart, but the ability to carry it out [consistently] is not.

Revelation 3:2-3

Wake up, and strengthen what remains [i.e., those few in the church who were trying to stay faithful], who are about to die. For I have not found [any] of your deeds to be complete before my God.

Matthew 6:13

And do not allow us to fall under temptation, but deliver us from [being harmed by] the evil one.'

Matthew 25:13

Therefore, you should be watchful, for you do not know the day or hour [i.e., when the Son of man will return].

1 Corinthians 16:13

You people should be alert; stand firm in the faith; act like [godly] men; be [spiritually] strong.

Galatians 5:17

For what your body wants is in conflict with what the Holy Spirit wants [for you], and what the Holy Spirit wants conflicts with what your body wants, for these [two desires] are contrary to one another, so that you do not [always] do what you [really] want to.

Philippians 2:12

So then, my dear ones, just as you people were always obedient [to my teaching] when I was there with you, so now, in my absence [also], be [obedient] all the more. [Continue to] complete your own salvation [i.e., by living faithfully to the end. See Rom. 13:11] with fear and trembling [i.e., with a reverent and submissive spirit],

1 Peter 5:8

Be sensible and alert; your enemy the devil is prowling around like a roaring [i.e., hungry] lion looking for someone to [kill and] eat.

Revelation 3:10

Because you have obeyed my command to remain steadfast [in the face of difficult times], I will also keep you from [giving up when] the time of trial comes, which is about to come upon the whole world, to test those living 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 nothing good lives in me, that is, in my flesh, for the desire to do good is present in my heart, but the ability to carry it out [consistently] is not.
Galatians 5:17
For what your body wants is in conflict with what the Holy Spirit wants [for you], and what the Holy Spirit wants conflicts with what your body wants, for these [two desires] are contrary to one another, so that you do not [always] do what you [really] want to.
Philippians 2:12
So then, my dear ones, just as you people were always obedient [to my teaching] when I was there with you, so now, in my absence [also], be [obedient] all the more. [Continue to] complete your own salvation [i.e., by living faithfully to the end. See Rom. 13:11] with fear and trembling [i.e., with a reverent and submissive spirit],

General references

Mark 13:33
"You should pay attention; be alert and pray, for you do not know when the time will come [i.e., for the Lord to return].