King James Version (KJV) - Revelation 16:18 >

And there were voices, and thunders, and lightnings; and there was a great earthquake, such as was not since men were upon the earth, so mighty an earthquake, [and] so great.

Berean Study Bible (BSB) - Revelation 16:18 >

And there were flashes of lightning, and rumblings, and 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.

Textus Receptus (TR) - Revelation 16:18 >

Καὶ ἐγένοντο φωναὶ καὶ βρονταὶ καὶ ἀστραπαί, καὶ σεισμὸς ἐγένετο μέγας, οἷος οὐκ ἐγένετο ἀφ᾿ οὗ οἱ ἄνθρωποι ἐγένοντο ἐπὶ τῆς γῆς, τηλικοῦτος σεισμός, οὕτω μέγας.