Commentaries:
Robertson's Word Pictures (NT)
And there were (kai egenonto). "And there came" (same verb ginomai). See Revelation 8:5; Revelation 11:19 for this list of terrible sounds and lightnings, and for the great earthquake (seismov megav) see Revelation 6:12; Revelation 11:13 (cf. Luke 21:11).
Such as was not (oiov ouk egeneto). Qualitative relative with ginomai again, "such as came not."
Since there were men (af ou anqrwpoi egenonto). "Since which time (xronou understood) men came."
So great an earthquake, so mighty (thlikoutov seismov outw megav). Quantitative correlative thlikoutov rather than the qualitative toioutov, to correspond with oiov (not osov). And then outw megav repeats (redundant) thlikoutov. Cf. Mark 13:19 for oia—toiauth about like tribulation (qliyiv).
Other Robertson's Word Pictures (NT) entries containing Revelation 16:18:
James 3:4
Revelation 4:5
Revelation 6:12
Revelation 11:13
Revelation 11:19
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