Must We Prove the Historical Jesus?

A reader wrote: Sorry Larry, but you've made an assertion, and that assertion is that Jesus died for mankind. In order for that to be accepted as true, you have to prove that the historical Jesus existed which you cannot do. In addition, you need to prove that the Jesus' character is in fact the son of a God, which you cannot do, and in order to do so. You must be able to prove that a God actually exist which you clearly cannot do.

My Reply:  It is not my assertion but is God's assertion made in the Bible. Here is the assertion, 

"And he is the propitiation for our sins: and not for ours only, but also for the sins of the whole world" 1 John 2:2  

Now you made an assertion that I had to prove the historical Jesus. That can be put back to you to disprove the historical Jesus. Which you also cannot do. We are not time travelers that can prove anything ourselves. But we can trust in reliable sources or witnesses that we deem truthful that might steer us on a certain path. You also have been persuaded by other people. You have no doubt been instructed or taught by others of your kind. 

The most important evidence for me of God and Jesus is what is inside me which you cannot see or know. You too have something inside you that is guiding your thoughts. Your mind has convinced you not to believe in the Bible and my mind has convinced me that the Bible is true. There are spirits at work here. One is the Spirit of truth and the other is the spirit of error.  

A person doesn't really need proof that what the Bible says is true. All he needs is ears that hear and eyes that see. Many have neglected the inner teacher that is called the "Holy Ghost." It is the inner teacher that guides us into all truth. In the end it will be the Spirit of wisdom or truth that will justify the children of light when God is revealed in all His glory. Those who resist the truth will shrink away into darkness while those who had embraced the truth will shine like the stars in the firmament.