Claim. In the NT Age, even the most devout believers — through Jesus — attain only the position of adopted child before God, not children of direct lineage; the lineage itself remains different.
Elaboration. “Even the most ardent people of faith in the New Testament Age, whether they were ministers, elders, or people holding doctorates … are all adopted children before God” (3.1.-the-new-testament-age-is-the-age-of-the-adopted-son, 154-257, 1964.10.3). Romans 8:23 — “we … groan inwardly as we wait for adoption as sons” — is read as confirming this limit. Adoption is a relational right (calling God “Abba, Father”) without a change of blood: “Adopted children have a different lineage.” The adopted son’s task is to protect and defer to the coming son of direct lineage, not to claim the inheritance as his own. No matter how devout, “in the New Testament Age you absolutely cannot be God’s son” (ibid, 48-95, 1971.9.5).
See also. csg-lineage-change-required-for-direct-sonship, csg-jesus-introduced-god-as-father