• The Laws of Logic
• Christianity's distinctive, characteristic beliefs

• If the Son became God, then He is less in rank to the Father
• Jesus is of equal rank to the Father
• Jesus cannot be of less rank and equal rank to the Father: Law of the Excluded Middle
• If the above is true, x Adoptionism is true

∴ x Adoptionism is true

• If the Son became God, He is not homoousious to the Father
• Jesus is the same homoousious to the Father
• Jesus cannot be both same and not same homoousious to the Father: Law of the Excluded Middle
• If the above is true, x Adoptionism is true

∴ x Adoptionism is true

Adoptionism: the belief that Jesus, the Son, became God during or after conception.

Homoousious: of the same substance

Adoptionism is true