Mark 5:42
And the little girl at once got up and started walking around, for she was twelve years old. And instantly they were completely dumbfounded.
Mark 1:27
They were all so dumbfounded that they kept discussing it among themselves, and asking, "What does this mean? It is a new teaching. He gives orders with authority even to foul spirits, and they obey Him."
Mark 4:41
They were very much frightened, and said to one another, "Who can He be that even the wind and the sea obey Him?"
Mark 6:51
Then He went up to them and got into the boat, and the wind lulled. They were completely dumbfounded,
Mark 7:37
So the people were overwhelmingly dumbfounded, and kept saying, "How wonderfully He has done everything! He even makes deaf people hear and dumb people talk."
Acts 3:10-13
and recognized him as the very man who used to sit at The Beautiful Gate of the temple to beg, they were completely astounded and bewildered at what occurred to him.