New Defender's Study Bible Notes
20:5 lived not again. This phrase clearly indicates bodily resurrection after bodily death. The unsaved dead obviously will not live again spiritually, for they are in hades and will ultimately be in the lake of fire. In fact, the term “resurrection” itself occurs over forty times in the New Testament, and always refers to the resurrection of the body.
20:5 finished. Jesus had referred to “the resurrection of life” and “the resurrection of damnation” (John 5:28-29), and so had Daniel (Daniel 12:2) but here it is revealed for the first time that the first resurrection will be completed a thousand years before the second. The word “is” does not appear in the Greek. The sense probably is that “this completes the first resurrection (note I Corinthians 15:22,23; Matthew 27:52-53; Revelation 11:11).