Jefferson, as you should note, had some rather unusual theological opinions:
... Jefferson expressed himself strongly on that larger apocalypse, the Book of Revelation, in a letter to Alexander Smyth of 17 January 1825: it is "merely the ravings of a maniac, no more worthy, nor capable of explanation than the incoherences of our own nightly dreams." Apocalyptic writing deserved no commentary, for "what has no meaning admits no explanation"; therefore, apocalyptic prophecies associated with Jesus deserved and would receive no attention from Jefferson in his Life and Morals of Jesus. (E. S. Gaustad, "Religion," in Merrill D. Peterson, ed., Thomas Jefferson: A Reference Biography, New York: Charles Scribner's Sons, 1986, p. 287.)
... If we did a good act merely from the love of God and a belief that it is pleasing to Him, whence arises the morality of the Atheist? It is idle to say, as some do, that no such thing exists. We have the same evidence of the fact as of most of those we act on, to wit: their own affirmations, and their reasonings in support of them. I have observed, indeed, generally, that while in Protestant countries the defections from the Platonic Christianity of the priests is to Deism, in Catholic countries they are to Atheism. Diderot, D'Alembert, D'Holbach, Condorcet, are known to have been among the most virtuous of men. Their virtue, then, must have had some other foundation than love of God. (Thomas Jefferson, letter to Thomas Law, June 13, 1814. From Adrienne Koch, ed., The American Enlightenment: The Shaping of the American Experiment and a Free Society, New York: George Braziller, 1965, p. 358.)
In every country and every age, the priest has been hostile to liberty. He is always in alliance with the despot, abetting his abuses in return for protection to his own. It is easier to acquire wealth and power by this combination than by deserving them, and to effect this, they have perverted the purest religion ever preached to man into mystery and jargon, unintelligible to all mankind, and therefore the safer for their purposes. (Thomas Jefferson, in a letter to Horatio Spofford, 1814; from George Seldes, ed., The Great Quotations, Secaucus, New Jersey: Citadel Press, 1983, p. 371)
As for Benjamin Franklin:
[Benjamin] Franklin drank deep of the Protestant ethic and then, discomforted by church constraints, became a freethinker. All his life he kept Sundays free for reading, but would visit any church to hear a great speaker, no doubt recognizing a talent he himself did not possess. With typical honesty and humor he wrote out his creed in 1790, the year he died: "I believe in one God, Creator of the universe.... That the most acceptable service we can render Him is doing good to His other children.... As to Jesus ... I have ... some doubts as to his divinity; though it is a question I do not dogmatize upon, having never studied it, and think it needless to busy myself with it now, when I expect soon an opportunity of knowing the truth with less trouble." (Alice J. Hall, "Philosopher of Dissent: Benj. Franklin," National Geographic, Vol. 148, No. 1, July, 1975, p. 94.)
When a Religion is good, I conceive it will support itself; and when it does not support itself, and God does not take care to support it so that its Professors are obliged to call for help of the Civil Power, it is a sign, I apprehend, of its being a bad one. (Benjamin Franklin, 1706-1790, American statesman, diplomat, scientist, and printer, from a letter to Richard Price, October 9, 1780; from Adrienne Koch, ed., The American Enlightenment: The Shaping of the American Experiment and a Free Society, New York: George Braziller, 1965, p. 93.)