The word used by the Fathers of Nicaea, to establish the true Godhead of the Son, inserted by them in their Creed, and ever since the watchword of those who have true faith in the divinity of Christ. A man may be said to be of one substance with another because he has the same specific nature; but the Son is consubstantial with the Father in another sense, for his nature is numerically one with that of the Father; else, there would be two Gods. Hence, when we say that the Son is consubstantial with the Father, we confess His perfect equality and co-eternity with the first Person of the Trinity and at the same time exclude all imperfection from His eternal generation. A human son receives an individual nature and is separate from his father; but God the Son is ever in the Father and the Father in Him.

MLA Citation

  • Father James J McGovern. “consubstantial”. Catholic Pocket Dictionary, 1906. CatholicSaints.Info. 2 November 2019. Web. 26 February 2021. <>