Augustine of Hippo — as excerpted in the Catena Aurea on Mark 14:32-42

“(ubi sup.) Or else; In that it is said, that after He had spoken these words, Sleep on note, and take your rest, He added, It is enough, and then, the hour is come; behold, the Son of man is betrayed, we must understand that after saying, Sleep on now, and take your rest, our Lord remained silent for a short time, to give space for that to happen, which He had permitted; and then that He added, the hour is come; and therefore He puts in between, it is enough, that is, your rest has been long enough.”