USA Freemasonry is definetly NOT Christian. Men of many different faith backgrounds and traditions participate in our quiet retreat. I have attended lodge with Jewish men, and with Muslim men. In Washington DC, I once assisted a man in taking his Fellow Craft oath on the Holy Qu'Ran (The sacred text of Islam). I consider this one of the high points of my masonic experience. I wish more Muslims would join Freemasonry.
I attended lodges in Saudi Arabia, where the Holy Bible and the Holy Qu'Ran were side by side on the altar.
Masonry accepts men who believe in God. The individual belief systems of the individual man are of no concern to Masonry. We are truly a non-denominational, non-sectarian, inter-faith organization. I am proud to participate in a fraternity that welcomes men from such a wide rainbow of faiths.
Here is a portion of a letter written by Brother George Washington, to the Jewish congregation at Truro Synagogue:
The Citizens of the United States of America have a right to applaud themselves for giving to Mankind examples of an enlarged and liberal policy: a policy worthy of imitation. All possess alike liberty of conscience and immunities of citizenship. It is now no more that toleration is spoken of, as if it was by the indulgence of one class of people that another enjoyed the exercise of their inherent natural rights. For happily the Government of the United States, which gives to bigotry no sanction, to persecution no assistance, requires only that they who live under its protection, should demean themselves as good citizens.