There is scientific prove that God exists, but there isn't proof that Islam or Christianity is the truth; otherwise, all peoples would convert or revert to Islam or Christianity. No one can argue with proof. It is faith we have that is the proof for the believer only, but it matters who we put our faith in. Since Jesus said He is the only way to God, I am putting my faith and trust in Him completely. I will also believe He is who He says so I won't die in my sin. These warning are not my words, but they are directly from Jesus. So if anyone wants to honor Jesus, they know what to do.
Jesus said the man who hears His word and does it, is like the wise man who built his house on the rock. When the rains and wind and beat on the house, it stood firm, because of its rock foundation, but the man who hears His word and does not is like the foolish man who built his house on the sand. When the rain and the wind beat on the house, great was the destruction of it for it was not founded on the rock. Jesus is the Rock of my Salvation. If we have the right foundation, it matters how we build on it, but some people don't have the right foundation let alone how they build. The first thing people need is the correct foundation otherwise there is no chance at arriving at truth! Jesus said "I am the truth.." Truth is a person and nothing else my beloved friends.

Peace be unto you and may you all come to the full knowledge of truth