'On the Sabbath' in the Bible

And they entered into Capernaum; and immediately on the sabbath going into the synagogue, he taught.

And he was walking through the cornfields on the sabbath; and his disciples as they went on the road plucked the ears of corn.

And the Pharisees said to him, See, why are they doing on the sabbath, what is not lawful?

And they watched him if he would cure him on the sabbath; that they might accuse him.

And he saith to them, Is it lawful on the sabbath day to do good, or to do evil, to preserve life, or to kill? but they were silent.