In spite of right-wing Christian attempts to rewrite history to make Jefferson into a Christian, little about his philosophy resembles that of Christianity. Although Jefferson in the Declaration of Independence wrote of the Laws of Nature and of Nature's God, there exists nothing in the Declaration about Christianity.
Although Jefferson believed in a Creator, his concept of it resembled that of the god of deism (the term "Nature's God" used by deists of the time). With his scientific bent, Jefferson sought to organize his thoughts on religion. He rejected the superstitions and mysticism of Christianity and even went so far as to edit the gospels, removing the miracles and mysticism of Jesus (see The Jefferson Bible) leaving only what he deemed the correct moral philosophy of Jesus.
Distortions of history occur in the minds of many Christians whenever they see the word "God" embossed in statue or memorial concrete. For example, those who visit the Jefferson Memorial in Washington will read Jefferson's words engraved: "I have sworn upon the altar of God eternal hostility against every from of tyranny over the mind of man." When they see the word "God" many Christians see this as "proof" of his Christianity without thinking that "God" can have many definitions ranging from nature to supernatural. Yet how many of them realize that this passage aimed at attacking the tyranny of the Christian clergy of Philadelphia, or that Jefferson's God was not the personal god of Christianity? Those memorial words came from a letter written to Benjamin Rush in 1800 in response to Rush's warning about the Philadelphia clergy attacking Jefferson (Jefferson was seen as an infidel by his enemies during his election for President). The complete statement reads as follows:
http://nobeliefs.com/jefferson.htm