The Age of Reason/Part I/Chapter II
Every national church or religion has established itself by pretending some special mission from God, communicated to certain individuals. The Jews have their Moses; the Christians their Jesus Christ, their apostles and saints; and the Turks their Mahomet; as if the way to God was not open to every man alike.
Each of those churches shows certain books, which they call revelation, or the Word of God. The Jews say that their Word of God was given by God to Moses face to face; the Christians say, that their Word of God came by divine inspiration; and the Turks say, that their Word of God (the Koran) was brought by an angel from heaven. Each of those churches accuses the other of unbelief; and, for my own part, I disbelieve them all.
As it is necessary to affix right ideas to words, I will, before I proceed further into the subject, offer some observations on the word revelation. Revelation when applied to religion, means something communicated immediately from God to man.
No one will deny or dispute the power of the Almighty to make such a communication if he pleases. But admitting, for the sake of a case, that something has been revealed to a certain person, and not revealed to any other person, it is revelation to that person only. When he tells it to a second person, a second to a third, a third to a fourth, and so on, it ceases to be a revelation to all those persons. It is revelation to the first person only, and hearsay to every other, and, consequently, they are not obliged to believe it.
It is a contradiction in terms and ideas to call anything a revelation that comes to us at second hand, either verbally or in writing. Revelation is necessarily limited to the first communication. After this, it is only an account of something which that person says was a revelation made to him; and though he may find himself obliged to believe it, it cannot be incumbent on me to believe it in the same manner, for it was not a revelation made to me, and I have only his word for it that it was made to him.
When Moses told the children of Israel that he received the two tables of the commandments from the hand of God, they were not obliged to believe him, because they had no other authority for it than his telling them so; and I have no other authority for it than some historian telling me so, the commandments carrying no internal evidence of divinity with them. They contain some good moral precepts such as any man qualified to be a lawgiver or a legislator could produce himself, without having recourse to supernatural intervention. 
When I am told that the Koran was written in Heaven, and brought to Mahomet by an angel, the account comes to near the same kind of hearsay evidence and second hand authority as the former. I did not see the angel myself, and therefore I have a right not to believe it.
When also I am told that a woman, called the Virgin Mary, said, or gave out, that she was with child without any cohabitation with a man, and that her betrothed husband, Joseph, said that an angel told him so, I have a right to believe them or not: such a circumstance required a much stronger evidence than their bare word for it: but we have not even this; for neither Joseph nor Mary wrote any such matter themselves. It is only reported by others that they said so. It is hearsay upon hearsay, and I do not choose to rest my belief upon such evidence.
It is, however, not difficult to account for the credit that was given to the story of Jesus Christ being the Son of God. He was born when the heathen mythology had still some fashion and repute in the world, and that mythology had prepared the people for the belief of such a story. Almost all the extraordinary men that lived under the heathen mythology were reputed to be the sons of some of their gods. It was not a new thing at that time to believe a man to have been celestially begotten; the intercourse of gods with women was then a matter of familiar opinion. Their Jupiter, according to their accounts, had cohabited with hundreds; the story therefore had nothing in it either new, wonderful, or obscene; it was conformable to the opinions that then prevailed among the people called Gentiles, or mythologists, and it was those people only that believed it. The Jews, who had kept strictly to the belief of one God, and no more, and who had always rejected the heathen mythology, never credited the story.
It is curious to observe how the theory of what is called the Christian Church, sprung out of the tail of the heathen mythology. A direct incorporation took place in the first instance, by making the reputed founder to be celestially begotten. The trinity of gods that then followed was no other than a reduction of the former plurality, which was about twenty or thirty thousand. The statue of Mary succeeded the statue of Diana of Ephesus. The deification of heroes changed into the canonization of saints. The Mythologists had gods for everything; the Christian Mythologists had saints for everything. The church became as crowded with the one, as the pantheon had been with the other; and Rome was the place of both. The Christian theory is little else than the idolatry of the ancient mythologists, accommodated to the purposes of power and revenue; and it yet remains to reason and philosophy to abolish the amphibious fraud.
- It is, however, necessary to except the declamation which says that God visits the sins of the fathers upon the children. This is contrary to every principle of moral justice.—Author.