'On the Sabbath' in the Bible

And they go on to Capernaum, and immediately, on the sabbaths, having gone into the synagogue, he was teaching,

And it came to pass -- he is going along on the sabbaths through the corn-fields -- and his disciples began to make a way, plucking the ears,

and the Pharisees said to him, 'Lo, why do they on the sabbaths that which is not lawful?'

and they were watching him, whether on the sabbaths he will heal him, that they might accuse him.

And he saith to them, 'Is it lawful on the sabbaths to do good, or to do evil? life to save, or to kill?' but they were silent.