Early Christians believed in theosis

Christian theosis is not embarrassing to Christianity, and it should not be explained away as fake language. Athanasius and many later Christian writers speak boldly about deification, participation in God, union with Christ, adoption, holiness, and sharing in divine life.

That concession matters because a weak objection pretends Christians never used such language. The stronger question is what the language means. In historic Christian theology, deification is a gift of grace to creatures, not a promotion into the same kind of godhood as the uncreated Creator.

Christian theosis depends on the Creator-creature distinction. God is uncreated, eternal, and God by nature; redeemed people are created, dependent, and glorified by grace. They may be made holy, conformed to Christ, adopted as sons and daughters, and brought into communion with God, but they do not become additional gods beside Him.

That is why Isaiah's denial that any God will be formed after the Lord remains relevant. Psalm 82 and John 10 can be discussed honestly, but they do not turn judged rulers or Jesus' argument with His opponents into a promise that creatures become gods in the Father's order.

The New Testament gives Christians strong participation language. Believers are saved by grace, created in Christ for good works, made one with Christ and His people, adopted into God's family, and promised resurrection glory. John 17 can speak of believers being one as the Father and Son are one.

None of that requires a divine-species framework. Union with Christ is real union, not absorption into God's essence or graduation into independent deity. Adoption gives creatures a filial share in the Son's life by grace; it does not make the adopted creature an uncreated God.

Official LDS material goes beyond Christian participation language. Becoming Like God frames divine potential inside LDS doctrine, Heavenly Parents teaches a premortal family identity, Doctrine and Covenants 131 ties the highest celestial glory to the new and everlasting covenant of marriage, and Doctrine and Covenants 132 connects exaltation with sealing and says the exalted shall be gods.

The Marriage, Sealing, and Eternal Life topics fill out the same structure: eternal marriage, temple sealing, priesthood-administered ordinances, and exaltation in the highest celestial glory. That is not merely theosis with different vocabulary. It is a restored temple and family system with a different account of humanity's final destiny.

Christian theosis says creatures participate in God's life by grace while remaining creatures. LDS exaltation places divine potential within heavenly parents, premortal identity, eternal marriage, sealing authority, eternal increase, and becoming gods. The disagreement is therefore not over whether salvation transforms people deeply. Christianity says it does.

The disagreement is over the kind of transformation being claimed. Historic Christianity can confess grace, participation, adoption, union with God, holiness, and resurrection glory without crossing the Creator-creature boundary. LDS exaltation crosses into a stronger godhood category and attaches that destiny to temple sealing and restored priesthood authority.