NET

18 Then there were flashes of lightning, roaring, and crashes of thunder, and there was a tremendous earthquake—an earthquake unequaled since humanity has been on the earth, so tremendous was that earthquake.

Darby

18 And there were^D9599 lightnings, and voices, and thunders; and there was^D9600 a great earthquake, such as was not since men were upon the earth, such an earthquake, so great.

Darby Bible Notes

were - Lit. 'began to be.' Ginomai. aorists. was - Lit. 'began to be.' Ginomai. aorists.

KJV

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.