The Final Purpose of God

"The reference is to the unity which will hereafter exist in the kingdom of God, when all His friends on earth and in heaven shall be united, and all shall have a common head. Now there is alienation. The earth has been separated from other worlds by rebellion. It has gone off into apostasy and sin. It refuses to acknowledge the Great Head to which other worlds are subject, and the object is to restore it to its proper place, so that there shall be one great and united kingdom." Albert Barnes