In John 3, Jesus said that "everyone who believes in him may have eternal life". Later in John 14, Jesus said, "I am the way and the truth and the life. No one comes to the Father except through me." These and others are familiar sayings of the Lord, but pay attention to the boldness of these claims! Either he spoke the truth or falsehood. We see that everything he said or did challenges us to deal with it. A big sign could be placed next to him that literally says "Ignore me at your own peril!" There isn't another human being like that. To me, this is another one of the marks of a true God.