The practical use [of the Bible’s teaching concerning the person and office of Christ] is admonishing, that in our analysis of the personal propositions we may follow the glowing torch of the heavenly Word, not the darkness of [unregenerated human] reason; and that we not rely on the usual rules of logic to examine propositions expressing that supreme mystery, which is beyond expression, beyond every comprehension not only of men but even of angels. Leo says (Sermon de nativ.): “Unless faith believes it, human reason will not explain that both natures, divine and human, have come together into one person.” Cyril, bk. 4 on John 15: “The Word is united with humanity ineffably and beyond what the human mind can understand.” Damascenus calls the work of incarnation “the newest of all new things, the only new thing under the sun” (Orth. fid. bk. 3, ch. 1).
Gerhard, Johann Theological Commonplaces: Exegesis IV: On Christ 168-169