• The continuing, direct operation of the Holy Ghost on those who are called to be God's children implies, in fact, a broadening process of incarnation. Christ, the son begotten by God, is the first-born who is succeeded by an ever-increasing number of younger brothers and sisters. There are, however, neither begotten by the Holy Ghost nor born of a virgin. . . . Their lowly origin (possibly from the mammals) does not prevent them from entering into a close kinship with God as their father and Christ as their brother.