what can we really know about Jesus?

Jesus is a historically and religiously important figure, so people try to define who he really was. However, we have no access to Jesus anymore yet to responses about him, even though they are not facts but interpretations on many faced Jesus. Those responses originate from two forms: written and oral sources. Jesus preached people with parables and stories. Consequently we can learn about Jesus from what he said and advocated for, even though his sayings are not always corresponding in each source. Besides interpretations may be exaggerated reality seen through their particular views. therefore we need to consider most credited version of Jesus.