It can be demonstrated that there is good evidence to conclude that Jesus did raise from the dead.
His deciples were absolutely sure this man was who he said he was, that is until he was arrested and put on a cross. At this point they not only were doubtful that Jesus was the son of God, but they feared for their lives. They feared that being associated with him would mean that they were next to die.
However, every one of Jesus's deciples died, or was exciled in the case of John, while preaching that Jesus was the Son of God. What would cause these men, who were too afraid for their lives to even associate with Jesus turn around and be willing to die for the message of Jesus? Something had to confirm to them that Jesus was the Son of God. They were expecting the Messiah to overthrow the Roman government and set up his kingdom, and yet after seeing Jesus arrested and crucified what could possibly convince them a dead man was in fact the Messiah? It's only reasonable to conclude that Jesus himself, alive and resurrected, standing before them would be enough to convince them he was the real thing.
It would not be reasonable to say that these men just made the whole thing up. Many people die for causes they believe in, but not many people would die for a story they knew they madeup.
One of them would have eventually cracked under the preasure. Only seeing the resurrected Jesus in the flesh would have motivated these men to go out and be willing to die to tell the world that Jesus is Lord!
Jesus is alive and waiting for you to repend and believe!