Jeremiah asks this question to emphasize that good actions should not be repaid with bad things. Alternate translation: "Disaster from them should not be my reward for being good to them." (See: [[rc://en/ta/man/translate/figs-rquestion]])
Here the word "fury" represents the punishment that Yahweh intended to inflict upon them. Jeremiah speaks of Yahweh not punishing them as if he were turning his fury away from them. Alternate translation: "so that you would not punish them in your anger" (See: [[rc://en/ta/man/translate/figs-metonymy]] and [[rc://en/ta/man/translate/figs-metaphor]])