The devil is not in New Jerusalem and has no way to bother us in New Jerusalem nor to bother the nations around New Jerusalem.
First John 3:8 tells us “the devil has sinned from the beginning.” The devil is the source of sin which brought in death. John 8:44 tells us that the devil is a murderer from the beginning and that he is the father, the source, of lies. The nature of the devil is a lie because truth is not in him. This is the exact opposite of New Jerusalem in which Christ is the life and reality and where there is no lie.
Jesus has overcome the devil. In John 14:30 He told us that the ruler of this world (the devil) “has nothing in Me.” Hebrews 2:14 says, “Since therefore the children have shared in blood and flesh, He also Himself in like manner partook of the same, that through death He might destroy him who has the might of death, that is, the devil.”
It seems to us today that the devil is still active. The reason is that the judgment accomplished on the cross has not fully been carried out. Therefore, Ephesians 4:25-27 warns us to put away lies and anger so that we give no place to the devil. We wage this battle continually by applying the law of the Spirit of life (Rom. 8:2) to overcome the law of sin in our flesh (Rom. 7:20).
In Revelation 12:9 the devil is cast down and in 20:2 he is bound for a thousand years, and in 20:10 he is cast into the lake of fire. This is the final step of the judgment accomplished on the cross. As a result, the devil will never bother New Jerusalem nor the entire new creation.
Photo courtesy of NASA and JPL.