The Letter to the Galatians proclaims that Christianity was dependent upon nothing but God's free gift of grace, bestowed on all who would accept that gift by faith, Gentile and Jew alike. Because it declares this universality and confutes the Judaizing Christians, the Ietter is one of the great theological cornerstones of Christianity, according to Dr. Barclay. The Letter to the Ephesians, "The Queen of the Epistles," was a circular letter to the Christian churches generally. The main theme is the universal battle between Eood and evil, and the ultimate unity to be achieved only when all things are gathered together in Christ.