'On the Sabbath' in the Bible

"Look!" the Pharisees said to him, "why are they doing what is not allowed on the Sabbath?"

And they watched Jesus closely, to see if he would cure the man on the Sabbath, so that they might have a charge to bring against him.

And to the people he said: "Is it allowable to do good on the Sabbath--or harm? to save a life, or destroy it?"