The Primal Religion of Mankind Must be Identical to God's Revealed Religion

Did God write this in our hearts?

Should Mankind follow the Bible, Christ and Christianity or the Quran, Muhammad and Islam? Here's the answer.

God's Primal Religion
If God expects from us an account of our actions then it is necessary that He gives us a Law for the rule and judgement of those actions. That Law, called the Mosaic Law, the Natural Law, or moral law is written upon the human heart and is the primal religion given to mankind by God. It's God's universal standard of right and wrong rooted in our human nature. Therefore, the first religion which God gave to Man was that natural religion which He imprinted on our very nature when He first created us. 

Man, in his innocence in Eden, addressed God directly. Adam and Eve spoke to and conversed with God, walked with and talked to Him. There were no barriers. But then came the Fall and man's intimacy with God ended.

Is killing written in our heart?

After that, man's nature alone was not sufficient to have further access to God. That is, after the fatal ruin of their innocence by the freedom of their will and the use of their own reason, our first parents put a vast chasm between God and mankind, so much so that no communion could be maintained between them. At all.

The infinite abyss between God's infinite purity, goodness and truth on one side and man's infinite guilt and vileness on the other could never be bridged except through a Mediator. Therefore, God, still loving us and not willing to cast us off, appointed a Mediator.

God's Mediator
Now comes the supposed conundrum of the politically correct 21st Century. Who was God's appointed Mediator? Is God's Mediator Jesus Christ or is God's Mediator Muhammad? If Christ is God's Mediator, then Christianity is the revealed religion founded by God. If Muhammad is God's Mediator, then Islam is the revealed religion founded by God. One would think that Pope Francis would know the answer, however he himself gives Catholics no clue. So I will tell you. 

The New Adam
Christ the Redeemer

Would God send as his Mediator a lustful man satiating his lust with as many as 20 or more wives in addition to those brought into his harem as sex slaves? Did God send a pedophile to us as His Mediator - man who married a six year old child and had intercourse with her when she was nine? Would God send as His Mediator a man who amused himself and his nine year old wife by the entertainment of watching the beheading of 600-900 Jewish men and boys who had reached the age of puberty? Would God send us a Mediator to spread His religion by force, violence and killing?

God absolutely would not and did not do any such thing. He sent us a Mediator Who had all the attributes of Himself, Who indeed was Himself incarnate. We are to imitate Him. Not the false prophet of death, destroying everything in his path and raping every woman in sight.

The New Eve 
of the Protoevangelium
Genesis 3:15 

God's Revealed Religion
God gave us a natural religion written into our nature on our hearts. No escaping it. But because of the fall of our human nature, that is, Original Sin, and because the law of our reason alone is insufficient to be able to follow God, God gave us a Revealed Religion which is His Sacred Truth about Himself - the Sacred Truth of God - which we are all bound to follow and believe. Is God's religion revealed in the Bible? Or is God's religion revealed in the Quran? 

The Sacred Truth about God, revealed by Himself to mankind, is written in the one book containing nothing unworthy of God Who is infinite Truth, Beauty and Goodness. Because God is immutable He cannot write one thing into our very nature then turn around and reveal Himself as contrary to what He said in the first place.

Therefore, the blindingly clear answer is that God's Revealed Religion is the one which teaches nothing contrary to the dictates of what He wrote into our hearts - the Natural Primal Religion. Because He is immutable, God's Natural Religion and God's Revealed Religion must be identical.