Luke 22:45

When he got up from his prayer, he went to the disciples and found them asleep from sorrow.

Matthew 26:40

When he went back to the disciples he found them asleep. And he said to Peter, "Then were you not able to watch with me for one hour?

Matthew 26:43

When he came back he found them asleep again, for they could hardly keep their eyes open.

Mark 14:37

When he went back he found them asleep and he said to Peter, "Simon, are you asleep? Were you not able to watch for one hour?

Mark 14:40-41

When he came back he found them asleep again, for they could hardly keep their eyes open; and they did not know what answer to make 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
When he went back to the disciples he found them asleep. And he said to Peter, "Then were you not able to watch with me for one hour?
Mark 14:37
When he went back he found them asleep and he said to Peter, "Simon, are you asleep? Were you not able to watch for one hour?

General references

John 16:6
but your minds are full of sorrow because I have told you this.