To return evil for good/ to bite the hand that feeds you

He behaved in a manner that was forced upon him. He behaved in a manner that was bad toward someone who had done him good (returned evil in place of the good he had received).

("Yoseph said to the one who was over his house, 'Get up, pursue the men and overtake them, and say to them, "Why have you rewarded evil for good?" - at the beginning of Exodus 4, and it is also said: "He who repays evil for good will not have evil come out of his house" - Proverbs 17:13, and it is also said: "He who repays evil for good will not have evil come out of his house" (Proverbs 17:13) - Rabbi Yochanan said: If your friend precedes you, In the morning, we went ahead with the meat. Why? That is a camel, you will begin with it" - in the beginning of Rava Lach, and so: "Who will give and always to those who ask for your goodness, you will return only goodness under goodness" - Nathan Alterman / Citizen of the State of Israel - David Ben Gurion)

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