Mark 1:27

ἐθαμβήθησαν : another strong word peculiar to Mark = they were astonished, i.e., at the sudden and complete recovery. They saw at a glance that the attack had not run its usual course. ὥστε with the infinitive here expressing result. συζητεῖν, to seek together; in N. T. tropical = to inquire of one another, to discuss. The word occurs several times in Mark. τί ἐστι τοῦτο; The question refers to the whole appearance of Jesus in the synagogue that day. One surprise following close on another provoked wondering inquiry as to the whole phenomenon. The words following state the twofold ground of their astonishment: (1) διδαχὴ καινή κατʼ ἐξουσίαν, a style of teaching new as to authoritativeness (entirely different from the familiar type of the scribes); (2) καὶ τοῖς πνεύμασι τοῖς ἀκαθάρτοις ἑπιτάσσει, etc., also He commandeth the unclean spirits so that they obey Him. Both equally unlooked for: the former a moral miracle, the latter a physical; both revealing an imperial spirit exercising sway over the minds and bodies of men.