Or, Thou canst not tell whence it cometh; i. e. thou knowest not how He brings believers to the faith; or whither it goeth, i. e. how He directs the faithful to their hope. And so is every one that is born of the Spirit; as if He said, The Holy Spirit is an invisible Spirit; and in like manner, every one who is born of the Spirit is born invisibly.
Reproduced in full. Translation: Oxford 1841 (Newman), public domain (Public domain).
Also cites: Hom. in Oct. Pent.