how do you consider paul to be reliable??

> Paul had a great conversion, a spiritual awakening on the Damascus road when Adonai called to Him,

No. You'd have better luck convincing me that Pharaoh had a spiritual wakening on the Red Sea and turned around after receiving "revelation from God" calling to him, and "teaching" him things completely contrary to God's Law.

Why should ANYONE listen to Paul or take him or any opposition of God as any authority, when no authority from God came to him?
He claims a voice spoke to him, and someone had to tell him that voice was the Messiah. This is a clear liar, one opposed to the believers and whose heart hardened from clear opposition to clear infiltration and diversion of the movement of the Messiah, peace be upon him.

This is why he graduated from the evil of persecution to the greater evil of innovating evil against the truth, setting up a COMPLETELY DIFFERENT THEOLOGY FROM THAT OF MOSES AND THE MESSIAH, peace be upon them.
And the Disciples, who lived with the Messiah for years, learned from him in his ministry, and were taught by him directly? When they heard about Paul's innovations and teachings AGAINST THE MESSIAH, what did they do?
James, HAVING AUTHORITY OVER PAUL, summons him to the Temple of Jerusalem.

Why? Why did the Disciples summon him? Because they heard "rumours" that Paul was teaching against the Messiah and the Law! they wanted to give him a fair chance, saying, (paraphrased), "Oh, dear Paul, we have heard such appalling rumours that you are teaching against the Law! Please Paul, please show us that these rumours are not true! We have these men here, doing a sacrifice and taking a vow to the Law. Participate in the vow and sacrifice, and everyone will know that you are not teaching against the Law as those rumours say! Then everyone know they are rumours!"

What did Paul say to this?
Did he say, "Brothers, the Messiah came to me. He has given me the Gospel to spread!"
No.

What did Paul say? "It is true. I am teaching this. The Messiah told me to."
No.

What did Paul say? "I have a new message that the Messiah didn't teach you when he was with you for years. You wouldn't have got it then, but the Messiah met me once and I got it all."
No.

Paul PARTICIPATED IN SACRIFICES AND A VOW TO THE LAW, the same sacrifices and Law that the Disciples heard that he was teaching AGAINST! That HE WENT ON TO CONTINUE TO TEACH AGAINST, as the entire BASIS OF A SEPARATE MOVEMENT FROM THAT OF THE MESSIAH & HIS DISCIPLES, as the basis of MODERN CHRISTIANITY.

Which, really should be called "Paulinism", because you are a completely separate theology from the first Christians who followed the Messiah and the Disciples, WHO KEPT THE LAW AS THE DISCIPLES KEPT THE LAW AFTER THE MESSIAH.

Paul's theology was meant for those IGNORANT of the Law, and the FORGIVENESS, MERCY, AND JUSTICE offered by God; wherein FORGIVENESS IS ALWAYS AVAILABLE TO THOSE WHO REPENT!

But this is something Paul trained you with his lies to deny; to refuse to accept that God is the Most Forgiving, the Most Merciful, and say that He needs BLOOD to forgive, that He, the MOST MERCIFUL, needs a son to die so that He can mercifully forgive you.

These teachings fall flat and fail for those who are acquainted with the teachings of the Tanakh.
They were never meant for them.
These teachings of Paul were meant to take advantage of those ignorant ones, and give them a deceitful portrayal of the Tanakh as supporting Paul's theology; he invents several concepts and the idea that the Messiah is 'prophecised' to die or that God ever hinted at such a necessity.

This is why the first Church fathers absolutely LOATHED that you hear anything from a Jew about Judaism.

So, do me a favour and explain to me:
1) why I should accept this persecutor's claim, especially in light of the clear lies he tells in doing so?
2) why should I reject the teaching of the Tanakh & Qur'an that "Forgiveness is always available to those who repent" & "Repentance atones for all sins" -- and instead should accept/need the Messiah to die for me?

Thanks.