(6) When the disciples heard it.--At this point St. Matthew's narrative is the fullest. The three disciples shrink in fear, like that of the Israelites at the brightness of Moses' face (Exodus 34:30), like that of the priests in the Temple who could not stand to minister because of the cloud (1Kings 8:11), and lie prostrate on the ground in speechless terror. They have seen the glory of the Lord: can they hear His voice and live?

Verse 6. - Were sore afraid. The vision and the voice overcame them with awe and terror. They fell on their face. They tried to shut out the awful radiance that blinded them. Man's weakness could endure no more; prostrate, paralyzed with fear, they lay on the ground. Who could see God, and live? Had they not seen his glory, and heard his voice? What could they do but crouch in abject terror? Thus they knew not that the scene was over, that the tremendous glimpse of unseen realities vouchsafed to them had passed away.

17:1-13 Now the disciples beheld somewhat of Christ's glory, as of the only begotten of the Father. It was intended to support their faith, when they would have to witness his crucifixion; and would give them an idea of the glory prepared for them, when changed by his power and made like him. The apostles were overcome by the glorious sight. Peter thought that it was most desirable to continue there, and to go no more down to meet the sufferings of which he was so unwilling to hear. In this he knew not what he said. We are wrong, if we look for a heaven here upon earth. Whatever tabernacles we propose to make for ourselves in this world, we must always remember to ask Christ's leave. That sacrifice was not yet offered, without which the souls of sinful men could not have been saved; and important services were to be done by Peter and his brethren. While Peter spoke, a bright cloud overshadowed them, an emblem of the Divine presence and glory. Ever since man sinned, and heard God's voice in the garden, unusual appearances of God have been terrible to man. They fell prostrate to the earth, till Jesus encouraged them; when looking round, they beheld only their Lord as they commonly saw him. We must pass through varied experiences in our way to glory; and when we return to the world after an ordinance, it must be our care to take Christ with us, and then it may be our comfort that he is with us.And when the disciples heard it,.... The voice out of the cloud, and which they apprehended came from God, and was uttered with so much majesty:

they fell on their face: not so much out of reverence, or for the sake of adoration, but as persons struck with astonishment and fear, and were as half dead; and so fell with their faces fiat to the ground, not being able to stand before God, to behold his majesty, and hear his voice:

and were sore afraid: they were filled with fear, when, awaking out of their sleep, they saw the surprising glory of Christ, and of the two men that were with him, insomuch that they knew not what to think, or say; and so they were when they entered into the cloud, and still more upon hearing the voice of God himself, even though it was a voice of love, grace, and mercy; see Deuteronomy 5:24. But yet they were not struck with so much amazement and surprise, as not to know what was said; for they distinctly heard the words, rightly understood, and faithfully related them; from whom the evangelists had them, and which Peter perfectly remembered, and recorded many years after.