Yes Matthew 5 - 19, is clear, but you know that no man can keep the law, so the alternative is to change men character, and that is exactly what the Holy Spirit has come to do.
God knows that we are not perfect. To break the Law is human. To reject the Law is insurrection. The problem is not with breaking the Law, but with rejecting the Law.
As you know we sin because our human spirit is not holy. In ACTS 2 - 32 to 39, Peter was speaking to Jews, and he said;
Right! A Gentile speaking to the Jews. Read Acts 2:14. A Jew would never intruduce himself like that to a Jewish audience. That was Luke who wrote that speech and nobody ever delivered it. It was written only to document the Church.
" This Jesus God raised up again, to which we are all witnesses. therefore having been exalted to the right hand of God, and having received from the father the promise of the Holy Spirit, he has poured forth this which you both see and hear.
What kind of witness, an eyewitness? Mention to me an eyewitness to the resurrection of Jesus if you can.
For it was not David who ascended into heaven, but he himself says; "The Lord said to my Lord sit at my right hand, until I make thine enemies a footstool for thy feet.
Many Psalms were written to be chanted in the Temple by the choir of Levites. Especially David's Psalms. Then, Psalm 110 was one of them. That Psalm was originally written by David thus: "The Lord said to me, sit at my... " It would be awkward for the Levites to sing, "The Lord said to me..." Therefore, an alteration was in order, and that Psalm came out to be: "The Lord (God) said to my Lord (David), sit at my right hand..." Nothing at all to do with Jesus but through assumptions, as a result of lack of logical thinking.
Therefore let all the house of Israel know for certain that God has made him both Lord and Christ this Jesus whom you crucified.
That's another evidence that Peter could have never delivered that speech. Peter was a Nazarene Jew and not an anti-Semite to falsely accuse the Jews with having crucified Jesus, when he knew that the Romans did it and not the Jews. In fact, the late Pope John 23rd asked publicly that the Jewish People forgive Christianity for this 2,000 years old false accusation. If a Pope acknowledged such a thing, it's because the NT has failed.