[This is based on the Gospel of Mark and non-biblical historical sources.]
Jesus grew up in Nazareth in Judea under the reign of Emperor Augustus. He was brought up to be a carpenter like his father, but his passion lay elsewhere. During Roman rule, Judea was in a state of turmoil; The old ways were challenged by the foreign masters and the Jews were in need of a new hope. Growing up, Jesus was one among many who looked to the rabbis for solutions, he studied the scripture and learned from the rabbis. When Jesus was about 20, a man named John had gathered a following outside Jerusalem. He preached that this life was temporary and that the righteous would earn a life in paradise. Jesus joined his group, asked forgiveness for his sins and was baptized in the river Jordan as a confirmation of his new faith. John the baptist taught him that this life was just a path to paradise, that you had to suffer the struggles of the earthly life to receive God’s awards and that everyone was free to choose their own paths.
Jesus went out into the desert, to live as an asket like John. He deprived himself of earthly riches and luxuries in search for a higher truth. In the desert he meditated on the scriptures and the teachings of John and the rabbis and reached enlightenment. He came to the conclusion that life was a trial, but if you had faith in God, it would always end good and he imagined paradise as a metaphysical existence, removed from everything material and mundane of everyday life and that the greedy in this life would not be rewarded in the next, the sufferers today who put their faith in God would be rewarded tomorrow. When John was arrested and killed by the Romans, Jesus decided to spread his word and gathered people at the synagogues. He preached that if you had faith in God, whether you be king or slave, God would one day come to collect you for heaven. He preached that the Messianic age would not be a paradise on earth like the scriptures and the rabbis taught, but a life in a higher plane of existence, beyond all human comprehension. He said that if you only had faith, God would save you from all worldly pains. He laid his hands on the sick and wicked and through the strength of his faith, he gave them faith and they appeared to be healed, like many people pretending to heal people have done before and since. This made people think he was a vessel of God’s power.
The enlightened and powerful message he proclaimed appealed to those suffering under Roman rule. Jesus preached in many places in Judea and gained a large following, some of which had followed John before. They continued to destabilize the situation by amassing the poor and targeting those jews who collaborated with the Romans, be they priests or tradesmen, accusing them of living only for personal earthly gains and not according to the wishes of the all-loving and rewarding God. Now the Romans and the collaborators intervened and executed Jesus. Rumours soon started that Jesus had been seen after his death, like an ancient day Elvis. James and Simon took over the leadership and here’s where Jesus is no longer just an enlightened man like Siddhartha Gautama. The life of Jesus is added to the jewish faith in the shape of the new testament added to the old testament, just like the Quran replaced the bible as if the previous faith was not exactly wrong, but not exactly right either. The early church leaders that came after John the baptist and Jesus decided that Jesus had gone to heaven like he himself had taught. They also said that Jesus’ mother had been impregnated by God and that Jesus was the son of God and that this was proven by the “facts” that Jesus had healed the sick, expelled demons from the wicked and been resurrected after his death. Jesus never claimed to be divine, he was born of man and woman, he even had brothers and sisters. He was not born during the reign of Herod and he was not of the House of David and not born in Bethlehem. His death was not a cure for original sin, he was not the Jewish Messiah. Mary Magdalene, the prostitute crazy woman/his wife/someone random?, was the only one to have claimed to have seen Jesus resurrected. Read the Book of Mark if you don’t believe me. Here’s a quote for you, from Mark 6:
1 Jesus left there and went to his hometown, accompanied by his disciples. 2 When the Sabbath came, he began to teach in the synagogue, and many who heard him were amazed. “Where did this man get these things?” they asked. “What’s this wisdom that has been given him? … 3 Isn’t this the carpenter? Isn’t this Mary’s son and the brother of James, Joseph,[a] Judas and Simon? Aren’t his sisters here with us?” … 4 Jesus said to them, “A prophet is not without honor except in his own town, among his relatives and in his own home.” 5 He could not do any miracles there.
The struggle continued, both James and Simon were executed like John and Jesus, but the movement grew and after 300 years, Roman Emperor Constantine the Great converted to Christianity. Through the Pope in the Western part, Constantine in the Eastern part and the King of Ethiopia, Christianity eventually spread world-wide and today there are two billion Christians.