The story lines of Revelation 12-13; 17:1-19:6; and 19:7-20:6 contain overlapping parallels. The purpose of Revelation 12:7-13 being surrounded by parallel verses being dated as three and one-half years before the second coming is no doubt to communicate to the reader that the war in heaven described in Revelation 12:7-13 has the same terminus a quo. The events of Revelation 17:1-19:6 occur during this same time period with 17:14 summarizing the battle of Har-Magedon. Revelation 19:7-20:6 then describes the second coming of Christ through the millennium.