Father Al Kimel has a post up on the Christology of Saint Irenaeus. Irenaeus, he notes, does not see God the Son as something needed to “protect” the transcendence of God from creation. That is, Christ is not a demiurge insulating God from the muddiness of creation.
The Father, the Son, and the Holy Spirit are co-eternal.
So where is Irenaeus getting his Christology?
Irenaeus heard the teaching of Saint Polycarp of Smyrna. Perhaps Irenaeus was originally from Smyrna. Regardless, it’s universally agreed that Irenaeus was from Asia Minor.
The Christology of Smyrna (and Asia Minor) is that the canonical Apocalypse which repeatedly depicts Jesus Christ as “Yahweh” who repeats the words and actions of “Yahweh” from the books of Daniel and Ezekiel. This is why there is no subordinationism of the Son below the Father and the Spirit below the Son in Irenaeus.
The historical Jesus is Yahweh for the seven churches and seven angels/bishops of the Apocalypse.
If you’d like to learn more about the Christology of the Book of Revelation, check out my free audio commentary on the Book of Revelation: Catholic Perspective on the Book of Revelation Podcast. which begins with the “fiery apparition of Christ in chapter 1.