Here is why I believe Jesus is who He said He is; God in human flesh.
Let's start with the existence of God.
#1. Order and design of space and time and numbers. In my experience of life, intelligent design needs an intelligent designer.
#2. Human being's morals and innate value. If we have no creator and therefore no moral standard, we have no purpose and we have no objective morals.
#3. The scientific evidence for the Bible such as evidence of the flood, evidence of Biblical places, and the basic idea that a building is proof of a builder, paintings are proof of a painter and therefore creation (the birds and trees and oceans and animals) are proof of a creator.
Jesus is God?
#4. Jesus of Nazareth is a historically verifiable person who walked this earth, and the gospels were written by men who were with Jesus in the final years of his life, making the accounts of the gospel historically verifiable and accurate.
#5. Evidence that Jesus is who He said He is. Jesus claimed that He was God come in human flesh revealing Himself. So we have to look at his life and what He did to see if He was just a nut or trustworthy. Jesus lived a perfect life, taught incredible things, performed historically verifiable miracles, was murdered on the cross though innocent, and prayed for the people murdering Him, and over 40 days hundreds of people claim they saw the risen Christ.
#6. All the disciples of Jesus who claimed to see Him risen were murdered in the most brutal ways we can imagine. History and Psychology show us that men will not go through something they know to be a lie.