Matthew 26:40

And he came to his disciples, and found them sleeping; and he said to Peter: Was it so, that you had not strength to watch with me one hour?

Matthew 25:5

While the bridegroom delayed, they all slumbered and slept.

Matthew 26:35

Peter said to him: Though it should be necessary for me to die with thee, I will not deny thee. In like manner said all the disciples.

Matthew 26:43

And he came and found them sleeping again, for their eyes were heavy.

Matthew 26:38

Then Jesus said to them: My soul is encompassed with sorrow even to death; remain here, and watch with me.

Mark 14:37

And he came and found them sleeping; and he said to Peter: Simon, do you sleep? Had you not strength to watch one hour?

Luke 9:32

And Peter and those who were with him were heavy with sleep; but having fully awakened, they saw his glory, and the two men that stood with him.

Luke 22:45

And he arose from prayer, and came to his disciples, and found them asleep for sorrow.

Treasury of Scripture Knowledge

Summary

And he cometh unto the disciples, and findeth them asleep, and saith unto Peter, What, could ye not watch with me one hour?

Bible References

And findeth

Matthew 26:43
And he came and found them sleeping again, for their eyes were heavy.
Matthew 25:5
While the bridegroom delayed, they all slumbered and slept.
Mark 14:37
And he came and found them sleeping; and he said to Peter: Simon, do you sleep? Had you not strength to watch one hour?
Luke 9:32
And Peter and those who were with him were heavy with sleep; but having fully awakened, they saw his glory, and the two men that stood with him.
Luke 22:45
And he arose from prayer, and came to his disciples, and found them asleep for sorrow.

What

Matthew 26:35
Peter said to him: Though it should be necessary for me to die with thee, I will not deny thee. In like manner said all the disciples.

General references

Matthew 26:70
But he denied before them all, saying: I know not what you say.
Mark 13:33
Take heed, watch and pray: for you know not when the time is.
1 Corinthians 10:12
"Wherefore, let him that thinks he stands, take heed lest he foil.