Luke 9:34

“While he thus spake there came a cloud, etc.] 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,…”

“a cloud--not one of our watery clouds, but the Shekinah-cloud (see on Mat 23:39), the pavilion of the manifested presence of God with His people, what Peter calls "the excellent" of "magnificent glory" (Pe2 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" (Pe2 1:17-18).”

“See an account of the transfiguration in Matthew 17:1-13, and Mark 9:2-13. Luke 9:29 The fashion - The “appearance.” Glistering - Shining like lightning - of a bright, dazzling whiteness. As Mark says, “more white than any fuller could make it.” Luke 9:31 In glory - Of a glorious appearance. Of an appearance like that which the saints have in heaven. His decease - literally, his “exit” or “departure.” The word translated here “decease” - that is, exit, or “going out” - is elsewhere used to denote death. See 2 Peter 1:15. Death is a departure or going out from this life. In “this” word there may be an allusion to the “departure” of the children of Israel from Egypt. As that was going out from…”

“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. Luke 9:37”

“9:34 a cloud overshadowed them: Clouds often veil the presence of God (Exod 16:10; 19:9; 24:16).”

“there: Exo 14:19, Exo 14:20, Exo 40:34-38; Psa 18:9-11; Isa 19:1; Mat 17:5-7; Mar 9:7, Mar 9:8 and they: Jdg 6:22, Jdg 13:22; Dan 10:8; Rev 1:17 Luke 9:35”