I tell you, something greater than the temple is here. And if you had known what this means, ‘I desire mercy, and not sacrifice,’ you would not have condemned the guiltless. For the Son of Man is lord of the Sabbath.” —Matthew 12:6-8 ESV
The plain truth is, that our Lord did not abolish the law of the weekly Sabbath. He only freed it from incorrect interpretations, and purified it from man-made additions. He did not tear out of the decalogue the fourth commandment. He only stripped off the miserable traditions with which the Pharisees had incrusted the day, and by which they had made it, not a blessing, but a burden. He left the fourth commandment where he found it, a part of the eternal law of God, of which no jot or tittle was ever to pass away.