Mark 9:6 in the King James Version
For he wist not what to say; for they were sore afraid.
Context
5 Peter answered Jesus, “Rabbi, it is good for us to be here. Let’s make three tents: one for you, one for Moses, and one for Elijah.”
6 For he didn’t know what to say, for they were very afraid.
7 A cloud came, overshadowing them, and a voice came out of the cloud, “This is my beloved Son. Listen to him.”