Theophylact of Ohrid — as excerpted in the Catena Aurea on Mark 14:32-42

“That by His second prayer He might shew Himself to be very man. It goes on: And when he returned, he found them asleep again; He however did not rebuke them severely. For their eyes were heavy, (that is, with sleep,) neither wist they what to answer him. By this learn the weakness of men, and let us not, whom even sleep can overcome, promise things which are impossible to us. Therefore He goes away the third time to pray the prayer mentioned above. Wherefore it goes on: And he cometh the third time, and saith unto them, Sleep on now, and take your rest. He is not vehement against them, though after His rebuke they had done worse, but He tells them ironically, Sleep on now, and take your rest, because He knew that the betrayer was now close at hand. And that He spoke ironically is evident, by what is added: It is enough, the hour is come; behold, the Son of man is betrayed into the hands of sinners. He speaks this, as deriding their sleep, as if He had said; Now indeed is a time for sleep, when the traitor is approaching. Then He says; Arise, let us go; lo, he that betrayeth me is at hand; he did not say this to bid them fly, but that they might meet their enemies.”