The worldwide revolt against the Lord Christ at the end would seem to be a powerful proof for amillennial eschatology. Not so says North. There is an explanation that accounts for both a future postmillennial conquest by the godly and final rebellion of the part of many ungodly. The explanation is common grace.
Common grace is essential for postmillennial eschatology.
As increasing numbers of persons are converted in the future, they will obey the law of God themselves and apply it to the life of nations. The result will be abundant material prosperity as the blessing of God upon those who keep His law. These gifts are the common grace of God. Recognizing that external obedience to God's law and cooperation with the successful saints are in their best earthly interests, the ungodly conform to the millennial program. This also is God's common grace.