To me, one of the most compelling arguments for both the resurrection and the Godhood of Christ is James.
No, not the disciple.
No, not the other disciple.
I mean James, the half-brother of Jesus, who wrote the book of James.
James was not a believer when Jesus was doing His ministry, pre-crucifixion. He grew up with Him. He knew Him as a member of his family. And that’s all he saw Him as for a long time. It wasn’t until AFTER the resurrection that he came to believe in and follow Christ. You mean to tell me that someone who knew Jesus PERSONALLY would be easily tricked into thinking his idiot, delusional brother was actually legit? No. If there had been a ruse, he would have seen past it. If Jesus’s weirdo rag-tag followers started saying “He’s alive!” you think he’d just take that as fact? No. No, something had to convince him, just like Thomas, just like the rest of them. He had to see that He was really there. James went from a non-believer to a believer to a follower to a leader. That doesn’t happen to someone who hasn’t been completely convinced.
Another important thing to keep in mind is that Christianity did not guarantee political power. This was not a movement that preached guaranteed success in this life. There was no “manifesting wealth” or anything like that. There was nothing to gain here. There was so much to lose. And those who believed in Jesus for eternal life - the true treasure - proclaimed the truth, anyway. In spite of the high potential for danger and virtually no guarantee for success. They proclaimed Christ because they had been convinced that this was TRUTH. And that truth has remained the same ever since.