'Sabbath day' in the Bible

At that season Jesus went on the sabbath day through the grainfields; and his disciples were hungry and began to pluck ears and to eat.

Or have ye not read in the law, that on the sabbath day the priests in the temple profane the sabbath, and are guiltless?

and behold, a man having a withered hand. And they asked him, saying, Is it lawful to heal on the sabbath day? that they might accuse him.

And he said unto them, What man shall there be of you, that shall have one sheep, and if this fall into a pit on the sabbath day, will he not lay hold on it, and lift it out?

How much then is a man of more value than a sheep! Wherefore it is lawful to do good on the sabbath day.

Now late on the sabbath day, as it began to dawn toward the first day of the week, came Mary Magdalene and the other Mary to see the sepulchre.