Christ heals the man on the Sabbath and immediately commands him to break the ordinance under the law. He makes him walk on the Sabbath, and burdened with a bed, though God clearly cries through one of the holy prophets: "Do not carry burdens out of your houses on the Sabbath day" (Jer 17:22). Surely no prudent person will think that by this He compels the man to despise and transgress the divine commandments.
Rather, through this Christ made clear, as in an image, that the Jews would receive healing through obedience and faith in the last times of the age. I think the Sabbath indicates this, as the last day of the week. Those who have already received healing through faith and have passed over to a new life must count the old letter of the law as nothing. They must renounce service veiled, as it were, in shadows, and the useless observance of Jewish rites.
From this occasion, I think, blessed Paul wrote to those who returned to the law after faith: "I say to you, that if you become circumcised, Christ will profit you nothing" (Gal 5:2). And again: "You have become estranged from Christ, you who are justified by law; you have fallen from grace" (Gal 5:4).