'On the Sabbath' in the Bible

And they went into Capernaum. And immediately on the sabbath day He entered into the synagogue and taught.

And it happened that He went through the grainfields on the sabbath day. And as they walked His disciples began to pluck the heads of grain.

And the Pharisees said to Him, Behold, why do they do that which is not lawful on the sabbath day?

And they watched Him to see if He would heal him on the sabbath day, so that they might accuse Him.

And He said to them, Is it lawful to do good on the sabbath days, or to do evil? To save life, or to kill? But they were silent.