The man of lawlessness, or iniquity in the KJV is Paul.
You NEED to read Jesus' words/teachings in the 4 gospels.
The man of lawlessness, or iniquity is the one who misunderstands Paul.
The man of lawlessness, or iniquity is the one who pick and choose what to believe in the writings of Paul.
Calling to the stand Peter:
"Bear in mind that our Lord's patience means salvation, just as our dear brother Paul also wrote you with the wisdom that God gave him. He writes the same way in all his letters, speaking in them of these matters. His letters contain some things that are hard to understand, which ignorant and unstable people distort, as they do the other scriptures, to their own destruction. Therefore, dear friends, since you already know this, be on your guard so that you may
not be carried away by the error of lawless men and fall from your secure position. But grow in the grace and knowledge of our Lord and Savior Jesus Christ."
Calling the defendant Paul:
"I admit that I worship the God of our fathers as a follower of the Way, which the call a sect. I believe everything that agrees with the Law and that is written in the Prophets, and I have the same hope in God as these men, that there will be a resurrection of both the righteous and the wicked."
"I preached that they should repent and turn to God and prove their repentance by their deeds."