That Word Itself is the Beginning of All Things, in the Which We are Instructed as to Evangelical Truth.

10. Why is this, I beseech Thee, O Lord my God? I see it, however; but how I shall express it, I know not, unless that everything which begins to be and ceases to be, then begins and ceases when in Thy eternal Reason it is known that it ought to begin or cease where nothing beginneth or ceaseth. The same is Thy Word, which is also “the Beginning,” because also It speaketh unto us. Thus, in the gospel He speaketh through the flesh; and this sounded outwardly in the ears of men, that it might be believed and sought inwardly, and that it might be found in the eternal Truth, where the good and only Master teacheth all His disciples. There, O Lord, I hear Thy voice, the voice of one speaking unto me, since He speaketh unto us who teacheth us. But He that teacheth us not, although He speaketh, speaketh not to us. Moreover, who teacheth us, unless it be the immutable Truth? For even when we are admonished through a changeable creature, we are led to the Truth immutable. There we learn truly while we stand and hear Him, and rejoice greatly “because of the Bridegroom’s voice,” restoring us to that whence we are. And, therefore, the Beginning, because unless It remained, there would not, where we strayed, be whither to return. But when we return from error, it is by knowing that we return. But that we may know, He teacheth us, because He is the Beginning and speaketh unto us.

Conf 13.9.1