What new doctrine is this? — A various-reading gives a different structure, “What thing is this? A new doctrine with power. He commandeth even the unclean spirits...” “Doctrine” is, as elsewhere, the teaching taken as a whole, including manner as well as substance.
Related Commentaries of Mark 1:27
Mark 1:27
27 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.