Jerome
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.
Such as He is to be in the time of the Judgment, such was He now seen of the Apostles. Let none suppose that He lost His former form and lineaments, or laid aside His bodily reality, taking upon Him a spiritual or ethereal Body. How His transfiguration was accomplished, the Evangelist shews, saying, And his face did shine as the sun, and his raiment became white as snow, For that His face is said to shine, and His raiment described to become white, does not take away substance, but confer glory. In truth, the Lord was transformed into that glory in which He shall hereafter come in His Kingdom. The transformation enhanced the brightness, but did not destroy the countenance, although the body were spiritual; whence also His raiment was changed and became white to such a degree, as in the expression of another Evangelist, no fuller on earth can whiten them. But all this is the property of matter, and is the subject of the touch, not of spirit and ethereal, an illusion upon the sight only beheld in phantasm.