When the voice had spoken, Jesus was found alone. The disciples kept silent, and in those days they told no one anything of what they had seen.
In context
34While he was still speaking, a cloud formed and cast its shadow over them, and they were afraid as they entered the cloud. 35And a voice came out of the cloud: “This is my Son, the Chosen One. Listen to him.” 36When the voice had spoken, Jesus was found alone. The disciples kept silent, and in those days they told no one anything of what they had seen. 37The next day, when they came down from the mountain, a large crowd met him. 38And a man in the crowd shouted, “Teacher, I beg you, look at my son — he is my only child.