Contemporary English Version
Jesus came back and found them sleeping again. They simply could not keep their eyes open.

Douay-Rheims Bible
And he cometh again and findeth them sleeping: for their eyes were heavy.

And he cometh again and findeth them sleeping: for their eyes were heavy.

for.

Proverbs 23:34 And thou shalt be as one sleeping in the midst of the sea, and as a pilot fast asleep when the stern is lost.

Jonah 1:6 And the mariners were afraid, and the men cried to their god: and they cast forth the wares that were in the ship, into the sea, to lighten it of them: and Jonah went down into the inner part of the ship, and fell into a deep sleep.

Luke 9:32 But Peter and they that were with him were heavy with sleep. And waking, they saw his glory and the two men that stood with him.

Acts 20:9 And a certain young man named Eutychus, sitting on the window, being oppressed with a deep sleep (as Paul was long preaching), by occasion of his sleep fell from the third loft down and was taken up dead.

Romans 13:1 Let every soul be subject to higher powers. For there is no power but from God: and those that are ordained of God.

1 Thessalonians 5:6-8 Therefore, let us not sleep, as others do: but let us watch, and be sober. . . .