People often ask for proof that God exists. Are they blind to the evidence all around them or are they simply too hard hearted to be convinced? Two things limit how reliable any piece of evidence is: the extent of human knowledge and the trustworthiness of human reasoning. Even outside the religious community, faith plays a huge role in whether any piece of evidence is believed or not. One person sees a blade of grass as proof there is a God. Another views more proof and remains unconvinced. In Luke 16:19-31 a rich man suggested that if someone from the dead warned his brothers they would repent. Abraham said that if they would not believe Moses and the Prophets they would not believe someone rising from the dead. More evidence will not convince a hard-hearted person against their will.