https://www.etsjets.org/files/JETS-PDFs/44/44-2/44-2-PP237-252_JETS.pdf (accessed 9 September 2019)
The vindication of the saints is accompanied by the complete curtailing of the most characteristic activity of the dragon on earth: deceiving the nations. Yet Satan’s binding is for “a short time”, anticipating his release, and final rebellion and destruction after the millennium in 20:7–10.
The binding, release, and final judgment of Satan may simply reflect a traditional apocalyptic motif as found in Isa 24:21–22; 1 Enoch 10:4–6, 11–13; and Jude 6, which reflect the common themes of binding and imprisonment of demonic beings (Azazel in 1 Enoch 10:4) until a future time of judgment.
The parallels between Rev 20:1–10 and 1 Enoch 10:4–6 are particularly close: (1) an angel binds Azazel (10:4; Rev 20:1–2); (2) Azazel is imprisoned in darkness and sealed over for a period of time (10:4–5; Rev 20:3); (3) the binding lasts until the day of judgment when Azazel is thrown into the fire (10:6; Rev 20:3, 7–10); (4) the binding renders Azazel incapable of corrupting the people with false teaching (10:7–8; Rev 20:3). John has taken over and adapted a traditional apocalyptic theme of the binding of the demonic/Satan and has integrated it into his own eschatological scenario of the final battle (20:7–10) and the final vindication of the saints (20:4–6). Thus, the binding and subsequent judgment of Satan are also not meant to communicate chronological information, but the thematic idea of the judgment of Satan using a traditional apocalyptic motif. The binding and judgment of Satan in vv. 1–3, like the millennium of vv. 4–6, function as part of the complex of events that will transpire at the Parousia.
The inclusion of the one thousand year reign of the saints between the two parallel scenes of the final battle can be explained in three ways. First, at this point John seems to be following Dan 7:9–14. Daniel 7 envisions the destruction of the beast at the end of history and the transference of his authority to the Son of Man and the saints with him. The judgment of the beast and the saints’ enemies is a necessary prelude for the reign of the saints. Therefore, the destruction of the beast and all evil in Revelation “requires as its positive counterpart that judgment be given in favour of the martyrs, who must be vindicated and rewarded.”
Second, and related to this, the mention of the saints seated on thrones in 20:4–6 suggests not only reigning but judging (cf. Dan 7:22; Luke 22:30; 1 Cor 6:2). The saints carry out their judicial function by ruling over and defeating the enemies in 19:11–21; 20:7–11.
Finally, by placing the vision of the final vindication of the saints in 20:4–6 immediately prior to the account of the final eschatological battle in vv. 7–11, John emphasizes that the vindication and victory of the saints is irreversible and secure. Satan’s last-ditch effort to thwart the saints is no contest at all and ends up in inevitable failure (vv. 9–10). God’s word on the matter is final.