In Luke 13:14-16, it is O.K to do good to people such as healing them on Sabbath.
Luke 13:14-17
[14]The official of the synagogue was angry that Jesus had healed on the Sabbath, so he spoke up and said to the people, “There are six days in which we should work; so come during those days and be healed, but not on the Sabbath!”
[15]The Lord answered him, “You hypocrites! Any one of you would untie your ox or your donkey from the stall and take it out to give it water on the Sabbath.
[16]Now here is this descendant of Abraham whom Satan has kept bound up for eighteen years; should she not be released on the Sabbath?”
[17]His answer made his enemies ashamed of themselves, while the people rejoiced over all the wonderful things that he did.