'On the Sabbath' in the Bible

At that time Jesus went on the sabbath through the grain-fields; and His disciples were hungry, and began to pluck heads of grain, and to eat.

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

And, behold, a man having a withered hand; and they questioned Him, saying, "Is it lawful to heal on the sabbath?" that they might accuse Him.

And He said to them "What man of you who shall have one sheep; and, if this should fall into a pit on the sabbath, will not lay hold of it, and raise it up?

How much better, therefore, is a man than a sheep! Therefore, it is lawful to do well on the sabbath."