Matthew 26:40

Then he came to the disciples and found them sleeping; and he said to Peter, "So, could you not watch with me one hour?

Matthew 25:5

While the bridegroom was delayed, they all slumbered and slept.

Matthew 26:35

Peter said to him, "Even if I have to die with you, I will not deny you." And so said all the disciples.

Matthew 26:43

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

Matthew 26:38

Then he said to them, "My soul is exceedingly sorrowful, even to death. Stay here and watch with me."

Mark 14:37

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

Luke 9:32

But Peter and those with him were heavy with sleep; and when they were fully awake, they saw his glory and the two men who stood with him.

Luke 22:45

When he rose from prayer, and came to his disciples, he found them sleeping from 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 again he came and found them sleeping, for their eyes were heavy.
Matthew 25:5
While the bridegroom was delayed, they all slumbered and slept.
Mark 14:37
Then he came and found them sleeping, and he said to Peter, "Simon, are you asleep? Could you not watch one hour?
Luke 9:32
But Peter and those with him were heavy with sleep; and when they were fully awake, they saw his glory and the two men who stood with him.
Luke 22:45
When he rose from prayer, and came to his disciples, he found them sleeping from sorrow.

What

Matthew 26:35
Peter said to him, "Even if I have to die with you, I will not deny you." And so said all the disciples.

General references

Matthew 26:70
But he denied it before them all, saying, "I do not know what you are talking about."
Mark 13:33
Take heed, watch; for you do not know when the time will come.
1 Corinthians 10:12
Therefore let any one who thinks that he stands take heed lest he fall.