'On the Sabbath' in the Bible

Now it happened that he was passing through the cornfields on the sabbath, and as the disciples made their way through they began to pull the ears of corn.

The Pharisees said to him, "Look at what they are doing on the sabbath! That is not allowed."

and they watched to see if he would heal him on the sabbath, so as to get a charge against him.

then he asked them, "Is it right to help or to hurt on the sabbath, to save life or to kill?" They were silent.