For the Son of man is Lord even of the Sabbath. Some connect this sentence with a preceding statement, that one greater than the temple is in this place, (ver. 6;) but I look upon them as different. In the former case, Christ, by an allusion to the temple, affirmed that whatever was connected with his personal holiness was not a transgression of the Law; but now, he declares that he has received authority to exempt his followers from the necessity of observing the Sabbath. The Son of man, (he says,) in the exercise of his authority, can relax the Sabbath in the same manner as other legal ceremonies. And certainly out of Christ the bondage of the Law is wretched, from which he alone delivers those on whom he bestows the free Spirit of adoption, (Romans 8:15.)

For the Son of man is Lord even of the Sabbath day - To crown all, Christ says that he was Lord of the Sabbath. He had a right to direct the manner of its observance - undoubted proof that he is divine.

The Son of man is Lord even of the Sabbath-day - The change of the Jewish into the Christian Sabbath, called the Lord's day, Revelation 1:10, shows that Christ is not only the Lord, but also the truth and completion of it. For it seems to have been by an especial providence that this change has been made and acknowledged all over the Christian world.

For the Son of man is Lord even of the sabbath day. By "the Son of man" is meant, not any man, as some have thought; for no mere man is lord of any law, moral or ritual, natural or positive; or has a power of disposing of it, and dispensing with it at pleasure; but Christ himself; which is the constant sense of this phrase in the New Testament, and is a character of the Messiah in the old, Daniel 7:13 who, as he was the institutor of the sabbath among the Jews, that being a ritual, and of mere positive institution, could dispense with it, and even abrogate it at his pleasure. The Jews so far agree to this, that he that commanded the law of the sabbath, could dispense with it; they say (z), that
"the day on which Jericho was taken was the sabbath day; and that though they slew and burnt on the sabbath day, , "he that commanded the observation of the sabbath, commanded the profanation of it".''
And since Christ is greater than the temple, and has all the perfections of the divine nature in him, is equal to the Father in power and glory; and even as mediator, has all power in heaven and earth given him; so as he is Lord of all other things, he is of the sabbath, and has a power of dispensing with it, and even of abolishing it; see Colossians 2:16 and since the Lord of the sabbath had a power of dispensing with it, and made use of it in the cases of David and his men, and of the priests in the temple formerly; the Pharisees ought not to think it strange, that the Son of man, who is equally Lord of the sabbath, dispensed with it in his disciples now.
(z) R. David Kimchi in Josh. vi. 11.

For the Son of man is Lord even of the sabbath day--In what sense now is the Son of man Lord of the sabbath day? Not surely to abolish it--that surely were a strange lordship, especially just after saying that it was made or instituted for MAN--but to own it, to interpret it, to preside over it, and to ennoble it, by merging it in the "Lord's Day" (Revelation 1:10), breathing into it an air of liberty and love necessarily unknown before, and thus making it the nearest resemblance to the eternal sabbatism.

For the Son of man is Lord of the Sabbath day. Because the Sabbath is made for humanity, the Lord of humanity is the Lord of the Sabbath. Observe, is the Lord of the Sabbath. He does not, then, abolish it, but has the right to make any change in it, in the interest of mankind, that seems to him wise. Neither Moses, nor any other mortal, ever claimed to be Lord of the Sabbath. This is a declaration of Divinity.

For the Son of man - Therefore they are guiltless, were it only on this account, that they act by my authority, and attend on me in my ministry, as the priests attended on God in the temple: is Lord even of the Sabbath - This certainly implies, that the Sabbath was an institution of great and distinguished importance; it may perhaps also refer to that signal act of authority which Christ afterward exerted over it, in changing it from the seventh to the first day of the week. If we suppose here is a transposition of Matthew 12:7-8, then Matthew 12:8 is a proof of Matthew 12:6.