Parallel
Revelation 16:18
Patriarchal Greek New Testament (1904) · Berean Standard Bible
καὶ ἐγένοντο ἀστραπαὶ καὶ φωναὶ καὶ βρονταί, καὶ σεισμὸς ἐγένετο μέγας, οἷος οὐκ ἐγένετο ἀφ᾽ οὗ οἱ ἄνθρωποι ἐγένοντο ἐπὶ τῆς γῆς, τηλικοῦτος σεισμὸς οὕτω μέγας.
And there were flashes of lightning, rumblings, peals of thunder, and a great earthquake the likes of which had not occurred since men were upon the earth—so mighty was the great quake.