John Mark
Mark 3:4ESV·traditional attribution

And he said to them, “Is it lawful on the Sabbath to do good or to do harm, to save life or to kill?” But they were silent.

Matthew Henry Presbyterian @wholebiblehenry

Here, as before, we have our Lord Jesus busy at work in the synagogue first, and then by the sea side; to teach us that his presence should not be confined either to the one or to the other, but, wherever any are gathered together in his name, whether in the synagogue or any where else, there is he in the midst of them.

Commenting on Mark 3:1-12

John Gill Reformed Baptist @doctorgill

And he saith unto them,.... Either to the whole multitude, to all the assembly in the synagogue; and so the Persic version renders it, "again he said to the multitude"; or rather, to the Scribes and Pharisees, who were watching him, and had put a question to him, which he answers by another: is it lawful to do good on the sabbath days, or to...

Albert Barnes Presbyterian @notesbybarnes

Verse 4. Or to do evil? to saw life, or to kill?. It seems to have been a maxim with the Jews, that not to do good, when we have an opportunity, was to do evil; not to save life was to kill, or to be guilty of murder.