Jesus is Lord of the Sabbath
Mark 2:28 "Therefore the Son of Man is also Lord of the Sabbath.
Jesus is Lord of the Sabbath therefore His teachings, regrading how the seventh day is to be observed, overrides the Old Covenant strictness of the letter.
John 12:48 He who rejects Me, and does not receive My words, has that which judges him, the word that I have spoken will judge him in the last day.
The words of Jesus didn't do away with honoring the seventh day they just released us from the strict letter of the Law. It's the letter of the Law that causes the seventh day to became more important than human needs.
Listen to how Jesus removes the ritualistic keeping of the Sabbath.
Luke 13:14-16 But the ruler of the synagogue answered with indignation because Jesus had healed on the Sabbath, the synagogue leader said to the people, There are six days for work. So come and be healed on those days, not on the Sabbath. The Lord answered him, You hypocrites! Doesnt each of you on the Sabbath untie your ox or donkey from the stall and lead it out to give it water? Then should not this woman, a daughter of Abraham, whom Satan has kept bound for eighteen long years, be set free on the Sabbath day from what bound her?
Matthew 12:10-12 And behold, there was a man who had a withered hand. And they asked Him, saying, Is it lawful to heal on the Sabbath? that they might accuse Him. Then He said to them, What man is there among you who has one sheep, and if it falls into a pit on the Sabbath, will not lay hold of it and lift it out? Of how much more value then is a man than a sheep? Therefore it is lawful to do good on the Sabbath.
Mark 3:4 Then Jesus said to them, "Is it lawful on the Sabbath to do good or to do evil, to save life or to kill?" But they kept silent.
Luke 6:9 Then Jesus said to them, "I will ask you one thing: Is it lawful on the Sabbath to do good or to do evil, to save life or to destroy?"
The teachings of Jesus ushers us into the spirit of the Law which gives us freedom to seek the higher good without doing away with that which is good.
2 Corinthians 3:6 who also made us sufficient as ministers of the new covenant, not of the letter but of the Spirit; for the letter kills, but the Spirit gives life.
Under the letter of the Law it was wrong to commit adultery but they could commit adultery in their heart. We find the sin of pornography here. Under the spirit of the Law you can be guilty of committing adultery in your heart without the physical act of adultery. Listen.
Matthew 5:27-28 You have heard that it was said to those of old, You shall not commit adultery. But I say to you that whoever looks at a woman to lust for her has already committed adultery with her in his heart.
Under the letter of the Law it's wrong to commit adultery but the higher good is that we shouldn't even lust after a woman in our heart. Under the letter of the Law it's wrong to heal someone on the Sabbath but under the spirit of the Law it's wrong not to heal someone on the Sabbath.
Luke 13:14-16 But the ruler of the synagogue answered with indignation because Jesus had healed on the Sabbath, the synagogue leader said to the people, There are six days for work. So come and be healed on those days, not on the Sabbath. The Lord answered him, You hypocrites! Doesnt each of you on the Sabbath untie your ox or donkey from the stall and lead it out to give it water? Then should not this woman, a daughter of Abraham, whom Satan has kept bound for eighteen long years, be set free on the Sabbath day from what bound her?
The spirit of the Law, found in the teachings of Jesus, neither does away with physical adultery nor the literal seventh day blessing.