This is Pauls gospel not the teachings of Jesus. He had NO authority at the time and often contradicts himself. At best he was a messenger of Jesus disciples.
Pauls Gospel (anything goes – as evident from 1 Cor 9:20-21) A few of many examples;
“In the day when God shall judge the secrets of men by Jesus Christ according to my gospel.” – Romans 2:16
“Now to him that is of power to stablish you according to my gospel, and the preaching of Jesus Christ, according to the revelation of the mystery, which was kept secret since the world began…” – Romans 16:25
“According to the grace of God which is given unto me, as a wise masterbuilder, I have laid the foundation, and another buildeth thereon.” – 1 Corinthians 3:10
“Remember that Jesus Christ of the seed of David was raised from the dead according to my gospel:” – 2 Timothy 2:8
2 Timothy 1:11 And of this gospel I was appointed a herald and an apostle and a teacher.
Jesus never came to change the laws
Matthew 5:17-20 – 17 “Do not think that I have come to abolish the Law or the Prophets; I have not come to abolish them but to fulfill them. 18 For truly, I say to you, until heaven and earth pass away, not an iota, not a dot, will pass from the Law until all is accomplished. 19 Therefore whoever relaxes one of the least of these commandments and teaches others to do the same will be called least in the kingdom of heaven, but whoever does them and teaches them will be called great in the kingdom of heaven. 20 For I tell you, unless your righteousness exceeds that of the scribes and Pharisees, you will never enter the kingdom of heaven. [Matthew 5:17-20 ESV]
Genesis 17:10-12 - 10 This is My covenant, which you shall keep, between Me and you and your descendants after you: every male among you shall be circumcised. 11 And you shall be circumcised in the flesh of your foreskin, and it shall be the sign of the covenant between Me and you. 12 And every male among you who is eight days old shall be circumcised throughout your generations, including a slave who is born in the house or who is bought with money from any foreigner, who is not of your descendants.
John 7:19-22 - “Did Moses not give you the Law, and yet none of you carries out the Law? Why are you seeking to kill Me?” 20 The crowd answered, “You have a demon! Who is seeking to kill You?” 21 Jesus answered them, “I did one deed, and you all are astonished. 22 For this reason Moses has given you circumcision (not that it is from Moses, but from the fathers), and even on a Sabbath you circumcise a man.
James 2:20-24 - 20 You foolish person, do you want evidence that faith without deeds is useless? 21 Was not our father Abraham considered righteous for what he did when he offered his son Isaac on the altar? 22 You see that his faith and his actions were working together, and his faith was made complete by what he did. 23 And the scripture was fulfilled that says, “Abraham believed God, and it was credited to him as righteousness,” and he was called God’s friend. 24 You see that a person is considered righteous by what they do and not by faith alone.
James 2:8-11 - If you really keep the royal law found in Scripture, “Love your neighbour as yourself,” you are doing right. But if you show favouritism, you sin and are convicted by the law as lawbreakers. For whoever keeps the whole law and yet stumbles at just one point is guilty of breaking all of it. For he who said, “You shall not commit adultery,” also said, “You shall not murder.” If you do not commit adultery but do commit murder, you have become a lawbreaker.
Revelation 2:14-16 - 14 Nevertheless, I have a few things against you: There are some among you who hold to the teaching of Balaam, who taught Balak to entice the Israelites to sin so that they ate food sacrificed to idols and committed sexual immorality. 15 Likewise, you also have those who hold to the teaching of the Nicolaitans. 16 Repent therefore! Otherwise, I will soon come to you and will fight against them with the sword of my mouth.
Revelation 2:20 - 20 Nevertheless, I have this against you: You tolerate that woman Jezebel, who calls herself a prophet. By her teaching she misleads my servants into sexual immorality and the eating of food sacrificed to idols.
Acts 21:21 They have been informed that you teach all the Jews who live among the Gentiles to turn away from Moses, telling them not to circumcise their children or live according to our customs.
Acts 21:25-26 - 25 As for the Gentile believers, we have written to them our decision that they should abstain from food sacrificed to idols, from blood, from the meat of strangled animals and from sexual immorality.” 26 The next day Paul took the men and purified himself along with them. Then he went to the temple to give notice of the date when the days of purification would end and the offering would be made for each of them.
(clearly above - Paul doing what he is told – he is not a decision maker)
Luke 16:17 It is easier for heaven and earth to disappear than for the least stroke of a pen to drop out of the Law.
Deuteronomy 13:5 - 5 That prophet or dreamer must be put to death for inciting rebellion against the LORD your God, who brought you out of Egypt and redeemed you from the land of slavery. That prophet or dreamer tried to turn you from the way the LORD your God commanded you to follow. You must purge the evil from among you.
Jesus says only 1 teacher
Matthew 23:8–12 8 But you are not to be called rabbi, for you have one teacher, and you are all brothers. 9 And call no man your father on earth, for you have one Father, who is in heaven. 10 Neither be called instructors, for you have one instructor, the Christ. 11 The greatest among you shall be your servant. 12 Whoever exalts himself will be humbled, and whoever humbles himself will be exalted. Matthew 23:15 - 15 “Woe to you, teachers of the law and Pharisees, you hypocrites! You travel over land and sea to win a single convert, and when you have succeeded, you make them twice as much a child of hell as you are.