Matthew 26:40

Then he came to his disciples, and found them asleep, and said to Peter. "So you were none of you strong enough to watch with me even one hour!

Matthew 25:5

Now because the bridegroom tarried, they all fell to nodding and went on sleeping.

Matthew 26:35

But Peter said to him, "Even if I must die with you, I will never deny you." And so said all the disciples.

Matthew 26:43

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

Matthew 26:38

and he said to them. "My soul is an anguish, even unto death! Stay here, and keep watch with me."

Mark 14:37

Then he came and found them asleep, and he said to Peter. "Are you sleeping, Simon? Could you not keep watch one hour?

Luke 9:32

Now Peter and those who were with him were heavy with sleep; but when they were fully awake they saw his glory, and the two men were standing beside him.

Luke 22:45

When he arose from his prayers, and came to his disciples, he found them sleeping 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
He came again and found them sleeping, for their eyes were heavy.
Matthew 25:5
Now because the bridegroom tarried, they all fell to nodding and went on sleeping.
Mark 14:37
Then he came and found them asleep, and he said to Peter. "Are you sleeping, Simon? Could you not keep watch one hour?
Luke 9:32
Now Peter and those who were with him were heavy with sleep; but when they were fully awake they saw his glory, and the two men were standing beside him.
Luke 22:45
When he arose from his prayers, and came to his disciples, he found them sleeping for sorrow,

What

Matthew 26:35
But Peter said to him, "Even if I must die with you, I will never deny you." And so said all the disciples.

General references

Matthew 26:70
But he denied it before them all; "I do not know what you mean," he said.
Mark 13:33
nor the Son, but only the Father.
1 Corinthians 10:12
So then let him who imagines that he is standing so securely beware lest he fall.