Jesus Christ was a real individual, even the most harcore atheist speakers will have no problem admitting he existed due to the overwhelming evidence in that direction.
Where the various religions differ (primarily Judaism, Christianity and Islam), is the role Jesus played in the grander scale of things. But all of them fundamentally agreed that Jesus existed.
In Judaism, Jesus is primarily seen as a fraud, and Judaism subscribes strictly to the Old Testament teachings, and ignores the New Testament. Jesus died on the crucifix and never was revived.
In Christianity, Jesus is the main reason why people were redeemed in the eyes of God. The whole religion of Christianity refers to the redemption of humanity through the crucifixion of Christ, giving everyone a chance.
In Islam, Jesus was seen as an ordinary prophet. The main difference here is that he never died from his crucifixion as he was rescued by Allah. While Jesus is known as a respected prophet, Muhammad is known as the most respected prophet.
As you can see here, the 3 biggest religions in the world all believe that Jesus existed. But differ on his actions and destiny.
Back to the topic of this post, I would argue that Jesus was an INFJ, not an INFP. The main difference here is the utilization of "Fe" over "Fi". Fe is primarily focused around external ethics, while Fi is focused on inner morals that come from within.
The morals Jesus taught others did not come from him, but from the Old Testament. If Jesus was an INFP, his morals would come from his own experiences, rather than teachings professed hundreds to thousands of years ago.
Also, while Jesus was scared about the cruelty and pain of his upcoming death, he went on with it anyway to prove he is the embodiment of Christ.
I'm not stating an INFP can't sacrifice themselves for the sake of principles, but I find it more plausible for an INFJ to do so. Since I believe Jesus was an INFJ, I think his dominant Ni allowed him to push through the fear and the pain. His introverted intuition and introverted thinking came to the conclusion that the only way to convince everyone is if he died on the cross, then come back from the dead. But his auxillary Fe did all of this because of his external code of ethics.