He explains the reason of this superiority, in what follows: For He was before me; as if his meaning was; And this is the reason of His being superior to me, though born after me, viz. that He is not circumscribed by the time of His nativity. He Who was born of His mother in time, was begotten of His Father out of time.
Reproduced in full. Translation: Oxford 1841 (Newman), public domain (Public domain).
Also cites: Hom. vii. in Ev. c. 3