'On the Sabbath' in the Bible

And they went into Capernaum: and going directly into the synagogue on the sabbath, He taught the people: and they were astonished at his doctrine;

And as He was going thro' the corn-fields on the sabbath-day, his disciples began as they went along to pluck the ears of corn.

And the pharisees said to Him, See, why do they what is not lawful to be done on the sabbath-day?

and they watched Him, whether He would heal him on the sabbath-day, that they might accuse Him.

then saith He to them, Is it lawful to do good on the sabbath, or to do evil? to save life, or to kill? but they were silent.