The Holy Spirit will come upon you, and the power of the Most High will overshadow you; therefore the holy one who will be born of you will also be called the Son of God (Luke 1:35). But if He is the Son of God, He is also God, of the same form as the Father and coeternal with Him. In Him the Father possesses all glory; He is, in His own person, the imprint and the image, and through the radiance the glory shines out (Hebrews 1:3).
And as rivers flow from an ever-flowing spring, so from this ever-flowing and ever-living spring comes forth the everlasting and true Light of the world, Christ our God (John 1:9; John 8:12). For of Him the prophets cried out: The rush of the river makes glad the city of God (Psalm 46:4). And not one city only, but all; for it gladdens the whole world as though it were one city.
Latin
Spiritus Sanctus superveniet in te, et virtus Altissimi obumbrabit tibi: ideo et quod nascetur ex te sanctum, vocabitur Filius Dei. Si autem Filius Dei, etiam Deus, eiusdem formae cum Patre, et coaeternus: in quo omnem Pater possidet clarificationem: character atque imago in persona; et per splendorem gloria refulget. Et quemadmodum ex perenni fonte procedunt flumina: sic et ex hoc perenni ac semper vivo fonte, progreditur perennis et vera lux mundi, Christus Deus noster. De eo namque Prophetae clamarunt: Fluminis impetus laetificat civitatem Dei: neque unam duntaxat civitatem, sed omnes; nam sicut unam civitatem, universum terrarum laetificat orbem.