We often focus on the Millennium as a time when Christ will reconcile the peoples of Israel & Judah to Himself (which is true). However, the Scriptures show that God is equally focused on reconciling all of Adam’s descendants (Gentiles/Nations/Peoples) to Himself during the Millennium. While it is true that the bulk of the Gentiles who have ever lived will be a part of the second resurrection, Christ and His firstborn sons and daughters will be working in the Millennium with those of the Gentile nations who survived the events leading up to Christ’s return.