You are correct. My intention is, if we have not seen it with our own eyes, touched it with our own hands, or otherwise have had first hand experience of it, we are taking someone else's word on it, and accepting that word on faith.
Jesus, claiming to be God in the flesh, backed his claims with miracles, and with the resurrection. However, since we can't verifiably prove this either way, it requires faith.
The assassination of Lincoln is the same. We can only go off of the historical evidence, and choose to accept or deny it.
When I download images from the Hubble telescope website, I believe they were actually taken by a telescope in orbit above the earth, of objects far, far away. However, I can't prove this conclusively to one determined to disbelieve, I can only cite the evidence for which I believe it. I have faith in the veracity of the claims of those who post the image, an thus in the validity of the images themselves. However, I have never touched the Hubble myself, have not verified it is in space, nor that it was not in fact focusing on a pretty picture drawn by an artist in Nevada. Of course, I like you, believe it is there. Whether or not someone feasibly could "touch it" or not is moot, for I can't.
95% of what we believe, we have never proven to ourselves as true, we have simply took someone else's word for it.