רָעַשׁ
From LSJ
καὶ λέγων ὅτι Πεπλήρωται ὁ καιρὸς καὶ ἤγγικεν ἡ βασιλεία τοῦ θεοῦ· μετανοεῖτε καὶ πιστεύετε ἐν τῷ εὐαγγελίῳ → declaring “The time has been accomplished and the kingdom of God is near: start repenting and believing in the gospel!” (Μark 1:15)
English (Strong)
a primitive root; to undulate (as the earth, the sky, etc.; also a field of grain), partic. through fear; specifically, to spring (as a locust): make afraid, (re-)move, quake, (make to) shake, (make to) tremble.