Patristic A.D. 420
“By Malachi, therefore, the voice Πνεύμκτος Ἅγιου of the Holy Spirit resounds to the Father concerning the Son, who is the countenance of the Father by which He has been known.”
Catena Aurea: Gospel of Mark, as excerpted in the Catena Aurea on Mark 1:2-3
PD · J. H. Newman (Oxford, 1842) ↗