And he said, Be it far from me, O LORD, that I should do this: is not this the blood of the men that went in jeopardy of their lives? therefore he would not drink it. These things did these three mighty men.
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Augustine of Hippo
I do not fear the uncleanness of food but only the uncleanness of uncontrolled desire. I know that Noah was permitted to eat every kind of meat which was edible; that Elijah was nourished on meat; that John, endowed with a marvelous abstinence, was not made unclean by partaking of living things, namely, the locusts which happened to be available as food. And I know that Esau was led into error by his greed for lentils; that David blamed himself for his craving for water; and that our King was tempted not by flesh but by bread. Further, the people in the desert deserved to be reprimanded, not because they desired meat but because they murmured against the Lord as a result of this desire for meat. Having been placed among these temptations, then, I struggle daily against undisciplined desire in eating and drinking.