[Jesus] left that place and entered their synagogue; a man was there with a withered hand, and they asked him, "Is it lawful to cure on the sabbath?" so that they might accuse him. He said to them, "Suppose one of you has only one sheep and it falls into a pit on the sabbath; will you not lay hold of it and lift it out? How much more valuable is a human being than a sheep! So it is lawful to do good on the sabbath." Then he said to the man, "Stretch out your hand." He stretched it out, and it was restored, as sound as the other. But the Pharisees went out and conspired against him, how to destroy him.~ Matthew 12:9-14 ~
When is it ever wrong to do good?