Jesus of Nazareth certainly existed

I would like to address this first and foremost: ". To narrow it down to one, any discussion of the historcity of Christ must include at the very least the resurrection, otherwise Christianity in it of itself is dead. As the Apostle Paul explains "And if Christ be not risen, then is our preaching vain, and your faith is also vain. Yea, and we are found false witnesses of God; because we have testified of God that he raised up Christ: whom he raised not up, if so be that the dead rise not. " (I Corinthians 15:14-15). This still avoids the debate of divinity and messiahship of which my opponent wishes to save for another day. Otherwise, we're debating over whether a Galliean carpenter exists who was named Yeshua bin Josef, which frankly is an impossible discussion for both me and my opponent as neither of us could use any of the New Testament nor corroborating documents as they would be based upon the the divine miracle worker and not a plain Jesus. I would say yes without the Resurrection, there is no Christianity. However, as much as I certainly believe in the Divinity of Christ, for this particular debate, I was not asking for a discussion on whether or not there was a carpenter named Yeshua Ben Josef, I was specifically asking for a debate on whether a carpenter named Yeshua Ben Josef existed and founded the Christian movement. In other words, there are many who circumvent arguments for the Divinity and Messiaship of Christ by simply saying He never existed in history, but was a creation of the church. And this sole claim is what I seek to dispute. We can and indeed will have discussions on whether or not Christ performed miracles, or whether He rose from the dead, but we need a starting point. Did the Jesus Christ we read about in the New Testament walk the earth? This was my sole question. Since my opponent has accepted the debate, I would suppose my opponent has agreed to rule number two. If this is the case, the flow of the debate was to state why my opponent doubts the existence of the historical Jesus (which I do believe is the same as the Christ of the New Testament. But again, we need a starting point. ) I will, however, begin by stating two major points that I believe are positive cases for the existence of Jesus of Nazareth (again, keeping in mind this is merely my starting point. ) 1. The attestation by secular sources 2. The existence of the Christian religion. Anyone who is of the belief that Jesus Christ did not exist, would need to come up with an alternative and satisfactory explanation for the existence of Christianity. Occam's razor and simple logic dictates that the Christian religion exists, and therefore needs a founder. The Christian faith says it's Founder is Jesus of Nazareth, Nazareth being a place that exists on Earth. Therefore our existence is tied directly to the existence of Jesus. Anyone disputing this would need to show why this is not the case, and present an alternative theory of Christianity's founding. Since my opponent is yet to, this is all that I can say on this matter. I would also like to ask, what my opponent thinks of the secular sources which document the existence of Jesus Christ. Such as the reference in the works of Cornelius Tacitus, Josephus, and Lucian of Samosata. Since these three documents attest to a Man named Jesus or Christ who founded the Christian faith.