35 Only, therefore, if we adhere to the holy inviolate faith, that there is one Person in Christ, that of the Word, in which two natures entirely distinct from each other, the divine and the human, distinct also in their properties and activities, converge - only if we adhere to this doctrine does the magnificence and the fatherly mercy of our ineffable redemption shine forth.
Source: Sempiternus Rex Christus (Vatican.va)