Albert Barnes Commentary Luke 14:5-6

"And he said unto them, Which of you shall have an ass or an ox fallen into a well, and will not straightway draw him up on a sabbath day? And they could not answer again unto these things." — Luke 14:5-6 (ASV)

Which of you, and so on. In this way Jesus refuted the notion of the Pharisees. If it was lawful to save an ox on the Sabbath, it was also to save the life of a man. To this the Jews had nothing to answer.