Acts 6:12

συνεκίνησάν τε τὸν λαόν, and they stirred up the people, who would be easily roused, if they were told that the glory of the Temple was spoken against. It was an object of much admiration, as we can see from many parts of the Gospels. Cf. Matthew 24:1.

τοὺς πρεσβυτέρους καὶ τοὺς γραμματεῖς. Neither elders nor scribes would need much rousing, their anger was kindled already. Cf. Acts 4:5.

ἐπιστάντες συνήρπασαν, they came upon him and caught him. The words indicate a good deal of violence, and this action is a fit prelude to the still greater outburst when Stephen’s defence was concluded (Acts 7:57).