10 a man was there with a withered hand, and they asked him, "Is it lawful to cure on the sabbath?" so that they might accuse him. 11 He said to them, "Suppose one of you has only one sheep and it falls into a pit on the sabbath; will you not lay hold of it and lift it out? 12 How much more valuable is a human being than a sheep! So it is lawful to do good on the sabbath." 13 Then he said to the man, "Stretch out your hand." He stretched it out, and it was restored, as sound as the other.
Matthew Henry's Commentary on Matthew 12:10-13
Commentary on Matthew 12:9-13
(Read Matthew 12:9-13)
Christ shows that works of mercy are lawful and proper to be done on the Lord's day. There are more ways of doing well upon sabbath days, than by the duties of worship: attending the sick, relieving the poor, helping those who need speedy relief, teaching the young to care for their souls; these are doing good: and these must be done from love and charity, with humility and self-denial, and shall be accepted, Genesis 4:7. This, like other cures which Christ wrought, had a spiritual meaning. By nature our hands are withered, and we are unable of ourselves to do any thing that is good. Christ only, by the power of his grace, cures us; he heals the withered hand by putting life into the dead soul, works in us both to will and to do: for, with the command, there is a promise of grace given by the word.