Remigius of Auxerre
Catena Aurea · Matthäusevangelium 17
And after six days Jesus taketh Peter, James, and John his brother, and bringeth them up into an high mountain apart, And was transfigured before them: and his face did shine as the sun, and his raiment was white as the light. And, behold, there appeared unto them Moses and Elias talking with him. Then answered Peter, and said unto Jesus, Lord, it is good for us to be here: if thou wilt, let us make here three tabernacles; one for thee, and one for Moses, and one for Elias.
If then the face of the Lord shone as the sun, and the saints shall shine as the sun, are then the brightness of the Lord and the brightness of His servants to be equal? By no means. But forasmuch as nothing is known more bright than the sun, therefore to give some illustration of the future resurrection, it is expressed to us that the brightness of the Lord’s countenance, and the brightness of the righteous, shall be as the sun.