KJV: And they were all amazed, insomuch that they questioned among themselves, saying, What thing is this? what new doctrine is this? for with authority commandeth he even the unclean spirits, and they do obey him.
NASB: They were all amazed, so that they debated among themselves, saying, "What is this? A new teaching with authority! He commands even the unclean spirits, and they obey Him."
KJV: And immediately when Jesus perceived in his spirit that they so reasoned within themselves, he said unto them, Why reason ye these things in your hearts?
NASB: Immediately Jesus, aware in His spirit that they were reasoning that way within themselves, said to them, "Why are you reasoning about these things in your hearts?