12 This proves that while to all the others the Word came, in order that they might prophesy, from Mary the Word Himself took flesh, and proceeded forth as man; being by nature and essence the Word of God, but after the flesh man of the seed of David, and made of the flesh of Mary, as Paul said. Him the Father pointed out both in Jordan and on the Mount, saying, 'This is My beloved Son in whom I am well pleased. ' Him the Arians denied, but we recognising worship, not dividing the Son and the Word, but knowing that the Son is the Word Himself, by Whom all things are made, and by Whom we were redeemed.
And for this reason we wonder how any contention at all has arisen among you about things so clear. But thanks to the Lord, much as we were grieved at reading your memoranda, we were equally glad at their conclusion. For they departed with concord, and peacefully agreed in the confession of the pious and orthodox faith. This fact has induced me, after much previous consideration, to write these few words; for I am anxious lest by my silence this matter should cause pain rather than joy to those whose concord occasions joy to ourselves.
I therefore ask your piety in the first place, and secondly those who hear, to take my letter in good part, and if anything is lacking in it in respect of piety, to set that right, and inform me. But if it is written, as from one unpractised in speech, below the subject and imperfectly, let all allow for my feebleness in speaking. Greet all the brethren with you. All those with us greet you; may you live in good health in the Lord, beloved and truly longed for.
Source: Letters (New Advent)