Jesus of Nazareth was a Jewish theologian who taught (among other things) an exciting and sophisticated view of the afterlife and a somewhat unusual theological perspective that God is love. His social and moral teachings (especially those on women) were quite progressive, and some of his teaching was so heterodox that he was considered a false prophet and a corrupter of the Jewish faith by the Sanhedrin.
Most Biblical scholars agree that the one gospel which suggests trinitarianism (the belief that God is three parts yet one- Father, Son and Holy Spirit), the Gospel of John, was the latest of the Gospels. It was heavily influenced by the Gnostics, a branch of early Christianity which has come to gain a bad reputation by most Christian sects, but one which suggested that Jesus was at least in a sense divine.
In the other Gospels Jesus is seen as human, though the Son of God, born of a virginal conception. He says nothing about being God himself, about worshiping him, or about changing Jewish laws like kosher and circumcision (being a Jew, Jesus was circumcised and followed kosher law himself), and the notion that Jesus himself founded an official church (much less the Catholic church) is nigh laughable.
Jesus was executed in the 1st Century A.D. by the Roman government in Israel. Jesus of Nazareth has been dead for over 2000 years, he's not coming back, and he's definitely not the God who created the world; it's questionable he even claimed that himself.
Jesus: I come to fulfill the law, not to abolish it.
Christian: OK guys! No more Torah, no more kosher law, no more fasting and only one hour of worship a week! Praise Jesus!