Matthew 12:12

“How much then is a man of more value than a sheep! For which reason it is lawful to do good on the sabbath day.”

But is a man not more valuable than a sheep? Thus it is certainly lawful to do what is good on the Sabbath day, and that includes the restoration of a man whose state was worse than being in a pit. Did they really think that a God of mercy would do otherwise? Note that Matthew's emphasis is on the value of men, and on their need to be restored. That is the lesson that he wants to get over.

‘And he says to him, “Friend, how did you come in here not having a wedding-garment?” And he was speechless.'

So the king speaks gently bit firmly to the offending man. He begins by calling him, ‘Friend'. In Matthew this is always said with a heavy heart. Compare Matthew 20:13; Matthew 26:50. It indicates someone being addressed who is in the wrong, but is being approached with thought and consideration. And then he questions him as to why he has come to the marriage-feast not wearing a wedding-garment.

The speechlessness of the man is intended to indicate his guilt. Had he had good reason he would have spoken out. But he could hardly tell the king that he had done it because he was contemptuous of the king and his son. And yet that could be the only real reason for doing it. But he had probably not expected the king to come in among such ‘common' company.