For she is the breath of the power of God, and a pure influence flowing from the glory of the Almighty: therefore can no defiled thing fall into her.
Read Chapter 7
Dionysius of Alexandria
AD 264
Because the Father is eternal, the Son is eternal, since he is light from light. If there is a parent, there is also a Son. If there were not a son, how, and of whom, would there be a parent? But both exist, and exist always. Since God is light, Christ is radiance. Since the spirit exists (in fact, "God is spirit"), by analogy Christ is called emanation. Indeed, "he is an emanation of the power of God." - "To Dionysius of Rome 4"
Although it is said of Wisdom that it "is an emanation of the power of God," nevertheless the Holy Spirit also, whose nature is fire, can be correctly compared (to the extent that the knowledge of divine things requires it) with an emanation, according to the words of the apostle, "Be fervent in the Spirit." - "Against Fabianus, fragment 22"