In conclusion, Jesus is reigning above, but not on earth with a rod iron when He returns with His overcomers, so the 1000 years has not yet begun. A rod of iron is not needed in Rev. 21 the New City and New Earth, but is needed in Rev. 20, because many people will not believe in Christ even though he is reigning on earth for 1000 years when He returns. See Rev. 2.26,27; 20.4-6.