And when the disciples heard it, they fell on their faces and were greatly afraid.
Matthew 17:6
Surrounding context
17:5 While he was still speaking, behold, a bright cloud overshadowed them; and suddenly a voice came out of the cloud, saying, "This is My beloved Son, in whom I am well pleased. Hear Him!"
17:6 And when the disciples heard it, they fell on their faces and were greatly afraid.
17:7 But Jesus came and touched them and said, "Arise, and do not be afraid."