Origen — as excerpted in the Catena Aurea on Matthew 26:39-44

“Finding them thus sleeping, He rouses them with a word to hearken, and commands them to watch; Watch and pray, that ye enter not into temptation; that first we should watch, and so watching pray. He watches who does good works, and is careful that He does not run into any dark doctrine, for so the prayer of the watchful is heard.”