Paul was a murderer:
And Saul, yet breathing out threatenings and slaughter against the disciples of the Lord, went unto the high priest,
And desired of him letters to Damascus to the synagogues, that if he found any of this way, whether they were men or women, he might bring them bound unto Jerusalem. Acts 9:1-2
And when the blood of thy martyr Stephen was shed, I also was standing by, and consenting unto his death, and kept the raiment of them that slew him. Acts 22:20
And I persecuted this way unto the death, binding and delivering into prisons both men and women. Acts 22:4
Paul was a law-abiding Jew who was zealous toward God:
I am verily a man which am a Jew, born in Tarsus, a city in Cilicia, yet brought up in this city at the feet of Gamaliel, and taught according to the perfect manner of the law of the fathers, and was zealous toward God, as ye all are this day. Acts 22:3
Yet Paul was chosen to know God’s will:
And he said, The God of our fathers hath chosen thee, that thou shouldest know his will, and see that Just One, and shouldest hear the voice of his mouth. Acts 22:14
What was God’s will?
But the Lord said unto him, Go thy way: for he is a chosen vessel unto me, to bear my name before the Gentiles, and kings, and the children of Israel:
For I will shew him how great things he must suffer for my name’s sake. Acts 9:15-16
Who will have all men to be saved, and to come unto the knowledge of the truth. 1 Timothy 2:4
And to make all men see what is the fellowship of the mystery, which from the beginning of the world hath been hid in God, who created all things by Jesus Christ: Ephesians 3:9
In what manner did the Apostle Paul bear Christ’s name before the Gentiles, Kings and children of Israel?
For this cause I Paul, the prisoner of Jesus Christ for you Gentiles,
If ye have heard of the dispensation of the grace of God which is given me to you-ward:
How that by revelation he made known unto me the mystery; (as I wrote afore in few words,
Whereby, when ye read, ye may understand my knowledge in the mystery of Christ)
Which in other ages was not made known unto the sons of men, as it is now revealed unto his holy apostles and prophets by the Spirit;
That the Gentiles should be fellowheirs, and of the same body, and partakers of his promise in Christ by the gospel:
Whereof I was made a minister, according to the gift of the grace of God given unto me by the effectual working of his power. Ephesians 3:1-7
Paul was given a new gospel:
Paul, a servant of Jesus Christ, called to be an apostle, separated unto the gospel of God, Romans 1:1
If the Apostle Paul was called to be an apostle and separated unto the gospel of God, it means he didn’t preach the same gospel as what the 12 Apostles preached.
Separated : To be apart; split.
What did Paul preach that the 12 didn’t preach?
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
If ye have heard of the dispensation of the grace of God which is given me to you-ward: Ephesians 3:2
Now ye are the body of Christ, and members in particular. 1 Corinthians 12:27
But after that faith is come, we are no longer under a schoolmaster. Galatians 3:25
For sin shall not have dominion over you: for ye are not under the law, but under grace. Romans 6:14
Having abolished in his flesh the enmity, even the law of commandments contained in ordinances; for to make in himself of twain one new man, so making peace; Ephesians 2:15
Something that is new didn’t exist before.