'Sabbath day' in the Bible

At that time Jesus went on the sabbath day through the grain field; and his disciples were hungry, and began to pluck the ears of grain, and to eat.

But when the Pharisees saw it, they said unto him, Behold, your disciples do that which is not lawful to do upon the sabbath day.

For the Son of man is Lord even of the sabbath day.

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

But pray you that your flight be not in the winter, neither on the sabbath day: