9 Then Jesus said to them, "I will ask you something: Is it lawful on the Sabbath to do good, or to do harm? To save a life, or to kill?"
*Minor differences ignored. Grouped by changes, with first version listed as example.
Then said Jesus unto them, I will ask you one thing; Is it lawful on the sabbath days to do good, or to do evil? to save life, or to (b) destroy [it]?
(b) Whoever does not help his neighbour when he can, he kills him.
Then said Jesus unto them,.... The Scribes and Pharisees, who were watching him, and whose thoughts, and the reasonings of their minds, purposes, and intentions, he full well knew:
I will ask you one thing; or question, as they had asked him one before; Matthew 12:10
is it lawful on the sabbath days to do good, or to do evil? to save life, or to destroy it? See Gill on Mark 3:4 to which may be added, that to save life on the sabbath day was agreeable to their own canons: there were many things which they allowed might be done on the sabbath day, when life was in danger, which otherwise were not lawful; See Gill on Matthew 12:8.
good, or . . . evil, save . . . or destroy--By this novel way of putting His case, our Lord teaches the great ethical principle, that to neglect any opportunity of doing good is to incur the guilt of doing evil; and by this law He bound His own spirit. (See Mark 3:4.)
To save life or to kill - He just then probably saw the design to kill him rising in their hearts.
*More commentary available at chapter level.