Concise Bible Dictionary:
This is an emphatic expression in the Revelation characterizing those that seek their portion on earth at the time when the Lord Jesus Christ is refused His rights in it: a great trial awaits them (Rev. 3:10). Others, persecuted by them, call upon God to avenge their blood (Rev. 6:10). The dwellers on earth will rejoice over the death of the two witnesses who stand before the God of the earth: they will worship the first beast, and be deceived by the miracles of Antichrist; yet the everlasting gospel will be preached to them, calling them to “Fear God, and give glory to him: for the hour of his judgment is come.” We do not read of their repentance (Rev. 11:10; Rev. 13:8,12,14; Rev. 14:6; Rev. 17:8).