He was “an hungred,” not during the forty days, but after them. Therefore when the Lord hungred, it was not that the effects of abstinence then first came upon Him, but that His humanity was left to its own strength. For the Devil was to be overcome, not by the God, but by the flesh. By this was figured, that after those forty days which He was to tarry on earth after His passion were accomplished, He should hunger for the salvation of man, at which time He carried back again to God His Father the expected gift, the humanity which He had taken on Him.
Reproduced in full. Translation: Oxford 1841 (Newman), public domain (Public domain).