John of Damascus — as excerpted in the Catena Aurea on Luke 9:32-36

“(Orat. de Trans. fig.) It were not good for thee, Peter, that Christ should abide there, for if He had remained, the promise made to thee would never receive its accomplishment. For neither wouldest thou have obtained the keys of the kingdom, nor the tyranny of death been abolished. Seek not bliss before its time, as Adam did to be made a God. The time shall come when thou shalt enjoy the sight without ceasing, and dwell together with Him who is light and life.”