'Sabbath day' in the Bible

And certain of the Pharisees said to them, Why do ye what it is not lawful to do on the sabbath day?

And the ruler of the synagogue, being much displeased, because Jesus had healed on the sabbath day, answered and said, There are six days, in which man ought to work: on these therefore come and be healed, and not on the sabbath.

And Jesus answering spake to the scribes and Pharisees, saying, Is it lawful to heal on the sabbath day?

And answered them, saying, Which of you shall have an ass or an ox fallen into a pit, and will not straightway pull him out on the sabbath day?