While he was saying this, a cloud came and overshadowed them; and they were fearful as they entered the cloud.
Luke 9:34
Surrounding context
9:33 Then it happened, as they were parting from Him, that Peter said to Jesus, "Master, it is good for us to be here; and let us make three tabernacles: one for You, one for Moses, and one for Elijah"--not knowing what he said.
9:34 While he was saying this, a cloud came and overshadowed them; and they were fearful as they entered the cloud.
9:35 And a voice came out of the cloud, saying, "This is My beloved Son. Hear Him!"