Luke 22:45

And when he arose from prayer, and had come to his disciples, he found them sleeping for sorrow:

Matthew 26:40

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

Matthew 26:43

And he came and found them asleep again: for their eyes were heavy.

Mark 14:37

And he cometh, and findeth them sleeping, and saith to Peter, Simon, sleepest thou? couldst not thou watch one hour?

Mark 14:40-41

And when he returned, he found them asleep again (for their eyes were heavy:) neither knew they what to answer him.

Treasury of Scripture Knowledge

Summary

And when he rose up from prayer, and was come to his disciples, he found them sleeping for sorrow,

General references

Bible References

Sleeping

Matthew 26:40
And he cometh to the disciples, and findeth them asleep, and saith to Peter, What, could ye not watch with me one hour?
Mark 14:37
And he cometh, and findeth them sleeping, and saith to Peter, Simon, sleepest thou? couldst not thou watch one hour?

General references

John 16:6
But because I have said these things to you, sorrow hath filled your heart.