Meaning
"a throne, a seat of authority," is used of the "throne" (a) of God, e.g., Heb 4:16, "the throne of grace," i.e., from which grace proceeds; Heb 8:1, Heb 12:2, Rev 1:4, Rev 3:21 (2nd part); Rev 4:2 (twice); Rev 5:1; frequently in Rev.; in Rev 20:12, in the best texts, "the throne" (some have Theos, "God," AV); cp. Rev 21:3, Mat 5:34, Mat 23:22, Act 7:49; (b) of Christ, e.g. Heb 1:8, Rev 3:21 (1st part); Rev 22:3; His seat of authority in the Millennium, Mat 19:28 (1st part); (c) by metonymy for angelic powers, Col 1:16; (d) of the Apostles in millennial authority, Mat 19:28 (2nd part); Luk 22:30; (e) of the elders in the heavenly vision, Rev 4:4 (2nd and 3rd parts), RV, "thrones" (AV, "seats"); so Rev 11:16; (f) of David, Luk 1:32, Act 2:30; (g) of Satan, Rev 2:13, RV, "throne" (AV, "seat"); (h) of "the beast," the final and federal head of the revived Roman Empire, Rev 13:2, Rev 16:10.
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for which see JUDGMENT-SEAT, is used of the throne or tribunal of Herod, Act 12:21.