Chapter XXII. In proof of the Unity in Trinity the passage of Isaiah which has been cited is considered, and it is shown that there is no difference as to its sense amongst those who expound it of the Father, or of the Son, or of the Spirit. If He Who was crucified was Lord of glory, so, too, is the Holy Spirit equal in all things to the Father and the Son, and the Arians will never be able to diminish His glory. · Sacred Texts