Matthew 26:43

And coming, he, again, found them sleeping, for their eyes had become heavy.

Luke 9:32

Now, Peter, and they who were with him, had become heavy with sleep; but, waking up, they saw his glory, and the two men who were standing with him.

Proverbs 23:34

So shalt thou become, as one lying down in the heart of the sea, - or as one lying down on the top of the mastgear:

Jonah 1:6

Then drew near unto him the shipmaster, and said to him, What meanest thou, O sound sleeper? Arise, cry unto thy God, Peradventure God will bethink himself of us, that we perish not.

Acts 20:9

And there sat, a certain young man by name Eutychus, in the window, who was getting overpowered by a deep sleep; and, while Paul was discoursing yet further, being overpowered by his sleep, he fell, from the third story, down, and was taken up dead.

Romans 13:1

Let, every soul, unto protecting authorities be in subjection; for there is no authority save by God, and, they that are in being, have by God been arranged, -

1 Thessalonians 5:6-8

Hence, then, let us not be sleeping, as the rest, but let us watch and be sober: -

Treasury of Scripture Knowledge

Summary

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

General references

Bible References

For

Proverbs 23:34
So shalt thou become, as one lying down in the heart of the sea, - or as one lying down on the top of the mastgear:
Jonah 1:6
Then drew near unto him the shipmaster, and said to him, What meanest thou, O sound sleeper? Arise, cry unto thy God, Peradventure God will bethink himself of us, that we perish not.
Luke 9:32
Now, Peter, and they who were with him, had become heavy with sleep; but, waking up, they saw his glory, and the two men who were standing with him.
Acts 20:9
And there sat, a certain young man by name Eutychus, in the window, who was getting overpowered by a deep sleep; and, while Paul was discoursing yet further, being overpowered by his sleep, he fell, from the third story, down, and was taken up dead.
Romans 13:1
Let, every soul, unto protecting authorities be in subjection; for there is no authority save by God, and, they that are in being, have by God been arranged, -
1 Thessalonians 5:6
Hence, then, let us not be sleeping, as the rest, but let us watch and be sober: -

General references

Matthew 26:70
But, he, denied before all, saying - I know not what thou sayest.