How can I trust Paul's account and whatever he wrote if he never met Jesus in person?

Christians please explain!
How can I trust Pauls account and whatever he wrote if he never met Jesus in person?
Paul was a deluded, self righteous, lunatic
Paul was a good man and his visions were true (I will provide proofs)
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How can I trust Paul's account and whatever he wrote if he never met Jesus in person?
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