As it was consolatory to them to hear of His resurrection, and how He came from God, and went to God, He dwells again and again on these subjects: Again I leave the world, and go to the Father. The one was a proof that their faith in Him was not vain: the other that they would still be under His protection.
Reproduced in full. Translation: Oxford 1841 (Newman), public domain (Public domain).
Also cites: Hom. lxxix