I believe Scripture presents humanity as the offspring of God, created from one human family (Acts 17:26–29).
Although all humanity is presently subject to death in Adam, God’s purpose in Christ is that all shall ultimately be made alive, each in his own order (1 Corinthians 15:22–23).
Christ died not for Israel only, but to gather the scattered children of God into one (John 11:51–52).
In the fullness of times, God will gather together in one all things in Christ, both those in heaven and those on earth (Ephesians 1:9–10).
Christ is the Head, and the ecclesia is His body (Ephesians 1:22–23).
Therefore, I believe that God’s ultimate purpose is for everyone to become a member of the body of Christ, each in his own order, until all things are subjected to Christ and ultimately “God may be all in all” (1 Corinthians 15:24–28).