Luke 22:45

Then rising from prayer he went to the disciples, only to find them asleep from sheer sorrow.

Matthew 26:40

Then he went to the disciples and found them asleep; and he said to Peter, "So the three of you could not watch with me for a single hour?

Matthew 26:43

And when he returned he found them asleep again, for their eyes were heavy.

Mark 14:37

Then he came and found them asleep; so he said to Peter, "Are you sleeping, Simon? Could you not watch for a single hour?

Mark 14:40-41

then he returned and found them once more asleep, for their eyes were heavy. They did not know what to say to 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
Then he went to the disciples and found them asleep; and he said to Peter, "So the three of you could not watch with me for a single hour?
Mark 14:37
Then he came and found them asleep; so he said to Peter, "Are you sleeping, Simon? Could you not watch for a single hour?

General references

John 16:6
No, your heart is full of sorrow at what I have told you.