World Wide Study Bible
a Bible passage
13who were born, not of blood or of the will of the flesh or of the will of man, but of God.
13. Which were born—a sonship therefore not of mere title and privilege, but of nature, the soul being made conscious of the vital capacities, perceptions, and emotions of a child of God, before unknown.
not of blood, &c.—not of superior human descent, not of human generation at all, not of man in any manner of way. By this elaborate threefold denial of the human source of this sonship, immense force is given to what follows,
but of God—Right royal gift, and He who confers must be absolutely divine. For who would not worship Him who can bring him into the family, and evoke within him the very life, of the sons of God?