Ambrose of Milan
Catena Aurea · Lukasevangelium 9
But Peter and they that were with him were heavy with sleep: and when they were awake, they saw his glory, and the two men that stood with him. And it came to pass, as they departed from him, Peter said unto Jesus, Master, it is good for us to be here: and let us make three tabernacles; one for thee, and one for Moses, and one for Elias: not knowing what he said. While he thus spake, there came a cloud, and overshadowed them: and they feared as they entered into the cloud. And there came a voice out of the cloud, saying, This is my beloved Son: hear him. And when the voice was past, Jesus was found alone. And they kept it close, and told no man in those days any of those things which they had seen.
Nor does the condition of man in this corruptible body allow of making a tabernacle to God, whether in the soul or in the body, or in any other place; and although he knew not what he said, yet a service was offered which not by any deliberate forwardness, but its premature devotion, receives in abundance the fruits of piety. For his ignorance was part of his condition, his offer of devotion.