Commentaries:
Does this verse mean that sinning angels will live forever? The only answer that squares with the rest of Scripture is that Jesus is referring only to righteous angels. They indeed do not die. Demons, though, will pay for their sins with death like every other unrepentant being.
John W. Ritenbaugh
Do Angels Live Forever?
Other Forerunner Commentary entries containing Luke 20:36:
Genesis 6:1-4