John of Damascus — as excerpted in the Catena Aurea on Matthew 26:36-38

“(Fid. Orth. iii. 23.) Or otherwise; All things which have not yet been brought into existence by their Maker have a natural desire of existence, and naturally shun non-existence. God the Word then, having been made Man, had this desire, through which He desired food, drink, and sleep, by which life is supported, and naturally used them, and contrariwise shunned the things that are destructive of life. Hence in the season of His Passion which He endured voluntarily, He had the natural fear and sorrow for death. For there is a natural fear wherewith the soul shrinks from separation from the body, by reason of that close sympathy implanted from the first by the Maker of all things.”