While he thus spake, there came a cloud, and overshadowed them: and they feared as they entered into the cloud.

And while he said these things, there came a cloud, and overshadowed them: and they feared as they entered into the cloud.

And as he spoke these things, there came a cloud, and overshadowed them; and they were afraid, when they entered into the cloud.

While he was thus speaking, there came a cloud and overshadowed them: and they feared as they entered into the cloud.

and as he was speaking these things, there came a cloud, and overshadowed them, and they feared in their entering into the cloud,

While he thus spoke, there came a cloud, and overshadowed them: and they feared as they entered into the cloud.

But while he was thus speaking, there came a cloud which spread over them; and they were awe-struck when they had entered into the cloud.

And while he said these things, the shade of a cloud came over them, and they were full of fear when they went into the cloud.

Then, as he was saying these things, a cloud came and overshadowed them. And as these were entering into the cloud, they were afraid.

and, while he was speaking, a cloud came down and enveloped them; and they were afraid, as they passed into the cloud;

While he thus spake there came a cloud,.... While Peter was making the above request, before an answer was returned, a cloud appeared, a very uncommon one, as a symbol of the divine presence: "and overshadowed them"; Jesus, Moses, Elias, and the disciples:
and they feared as they entered into the cloud; either as they themselves entered into it, that coming gradually over them, because of the glory of it, and the solemnity that attended it; or as Moses and Elias entered into it; and so the Syriac and Persic versions read, "they feared when they saw Moses and Elias enter into the cloud"; which took them out of their sight: just as the cloud received Jesus out of the sight of his disciples, when he ascended to heaven, Acts 1:9.

a cloud--not one of our watery clouds, but the Shekinah-cloud (see on Matthew 23:39), the pavilion of the manifested presence of God with His people, what Peter calls "the excellent" of "magnificent glory" (2-Peter 1:17).
a voice--"such a voice," says Peter emphatically; "and this voice [he adds] we heard, when we were with Him in the holy mount" (2-Peter 1:17-18).

A cloud came and overshadowed them all. And they, the apostles, feared, while they (Moses and Elijah) entered into the cloud, which took them away.