I have a theory about the proof of Gods existence. Could you look it over and poke some holes in it for me?

Sin: Transgression of Gods Law
(Original Sin: God commanded Adam not to eat of the fruit of the tree of the knowledge of Good and Evil for if he did, then he would surely die. Adam ate. By doing so he introduced into the world the law of sin and death. So death reigned from the time of Adam to the time of Moses. No new sin was done in this time period because God had not yet given any new law to transgress and thereby sin. Adams Original Sin was sufficient for the death of his descendants. But God wants for us eternal life but in order to give it to us sin had to be purged.)
The Law: Namely, the ten commandments. When The Law was given, sin increased, because everytime you transgressed one of these divine laws you were guilty of sin. And nobody could live perfectly by these laws because no human is perfect. Where sin increased, so did death. But instead of killing every sinner who sinned God instead instructed a sacrifice to be made in place of the sinner. So this became the practice of Gods people. This system paved the way for the Christ.
The Prophets: They made various prophecies concering the coming of the Messiah. Also to note: Ezekiel said that the soul who sinned is the one who will die. The sin of the father is not the sin of the son. This was a new developement and was a consequence of the Law. For he who follows the Law will live by it.
Jesus: Jesus made animal sacrifice obsolete because His sacrifice is sufficient for the forgiveness of all mankinds sin. Now where there was sin there was forgiveness. Jesus said that He didnt come to abolish The Law (namely the ten commandments) or the Prophets (Jesus fullfilled many of the prophecies but not all of them. Some are yet to be fullfilled). Jesus also summed up the law by giving us the command to “love your nieghbors as yourlself” for love is the fullfillment of the law. Lastly He gave us the great commission. That the kingdom could not come until His message had been preached to the whole world.
The Priests: Two thousand years of priests spreading the message of the forgiveness of sin throughout the world.
The Kingdom: Eternal life in God. Yet to happen.
I have many conclusions about what this narrative implicates for our current time and reason to believe that proof for Gods existence can be drawn from the above said narrative.
The theory is simple “The Word itself is proof of Gods existence”
What do you think?