>how many murders committed by the Joker are on Batman's head for not stopping him permanently?
How many victims of the Joker turned to God because of his malignity? It is not Batman's job to end the Joker's stewardship over his own life. Batman is responsible for combating suffering where he can. God has plenty of ways of taking the lives of those he pleases; He does not need to use your hands.
<>If your enemy is hungry, give him food to eat; And if he is thirsty, give him water to drink; For you will heap burning coals on his head, And the Lord will reward you. Proverbs 25:21-22
<>Do not say, “Thus I shall do to him as he has done to me; I will render to the man according to his work.” Proverbs 24:29
<>Vengeance is mine, and recompense, for the time when their foot shall slip; for the day of their calamity is at hand, and their doom comes swiftly.’ Deuteronomy 32:35
<> Repay no one evil for evil, but give thought to do what is honorable in the sight of all. Romans 12:17
<> Then Jesus said to him, “Put your sword back into its place. For all who take the sword will perish by the sword. Matthew 26:52-54
<> You have heard that it was said, ‘An eye for an eye and a tooth for a tooth.’ But I say to you, Do not resist the one who is evil. But if anyone slaps you on the right cheek, turn to him the other also. Matthew 5:38-39
<> Do not judge so that you will not be judged. 2 For in the way you judge, you will be judged; and [a]by your standard of measure, it will be measured to you. Matthew 7:1