The messengers were sent to show guidance and call mankind to Allah’s path. Some of them were given special powers but despite their high piety, they were made like any other human beings, they were to die after a certain point and they ate like normal people.

“And We did not create them (the Messengers, with) bodies that ate not food, nor were they immortals.” Quran (Surah Al-Anbiya, 8)
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