Origen
Catena Aurea · Lukasevangelium 1
Forasmuch as many have taken in hand to set forth in order a declaration of those things which are most surely believed among us, Even as they delivered them unto us, which from the beginning were eyewitnesses, and ministers of the word: It seemed good to me also, having had perfect understanding of all things from the very first, to write unto thee in order, most excellent Theophilus, That thou mightest know the certainty of those things, wherein thou hast been instructed.
It is written in Exodus, The people saw the voice of the Lord. (Exod. 20:18.) Now a voice is rather heard than seen. But it was so written, to shew us that men see the voice of the Lord with other eyes, which they only have who are worthy of them. Again in the Gospel, it is not the voice that is perceived, but the Word, which is more excellent than the voice.