If you are looking to see if Jesus existed, he gave instructions on how to be his witness.
Acts 1
8 But you will receive power when the Holy Spirit comes on you; and you will be my witnesses in Jerusalem, and in all Judea and Samaria, and to the ends of the earth."
Until I felt the Holy Spirit, I merely accepted Jesus by faith without any proof, or evidence other than scripture of his existance. I liked what the dude had to say, so I accepted it. After having felt what I believe to be the Holy Spirit, I feel it is a step beyond just faith, and I do now feel like a witness.
Can I get a witness? lol