'With Authority' in the Bible

And they were all amazed, insomuch that they questioned among themselves, saying, What is this? a new teaching! with authority he commandeth even the unclean spirits, and they obey him.

and they were astonished at his teaching; for his word was with authority.

And amazement came upon all, and they spake together, one with another, saying, What is this word? for with authority and power he commandeth the unclean spirits, and they come out.