John Chrysostom
What caused their astonishment upon hearing these words? Prior to this divine utterance by the Jordan, the people had not encountered anything similar; even after, with the thunder that followed, nothing comparable was experienced. What prompted them to cast themselves down on the mountain? The factors include the secluded and elevated setting, the deep stillness, the transfiguration that mingled awe with dread, the remarkable brilliance of light, and the expansive cloud that enveloped them, all leading to profound trembling. They were surrounded by wondrous phenomena, and in their fear, they fell prostrate. However, to prevent their fear from lasting too long and robbing them of clarity, Christ swiftly alleviated their terror, allowing them to see Him alone, and instructed them not to disclose what they had witnessed until after His resurrection.