NET
40 When he came again he found them sleeping; they could not keep their eyes open. And they did not know what to tell him.
Darby
40 And returning, he found them again sleeping, for their eyes were heavy; and they knew not what they should answer him.
KJV
40 And when he returned, he found them asleep again, (for their eyes were heavy,) neither wist they what to answer him.