There is one God

There is one God, because the Father is the begetter of the unique Son and the fount of the Holy Spirit: one without confusion and three without division.

The Father is unoriginate Intellect, the unique essential Begetter of the unique Logos, also unoriginate, and the fount of the unique everlasting life, the Holy Spirit.

There is one God because there is one Divinity, a Unity un-originate, simple, beyond being, without parts and undivided. The same Unity is a Trinity, also unoriginate, simple and so on.

St Maximos the Confessor