Warren Throckmorton, once again, gives us the details. Thomas Jefferson, like Jesse Lee Peterson (the interviewer) didn't believe in the Trinity. Jefferson unlike Peterson, cut that from which the Bible he didn't believe.
When so asked David Barton could have answered honestly. But, alas, he didn't. Jefferson thought St. Paul was a big phony. I wonder how you get an uncut Bible, while believing this.
When presented with the question, Barton went on the classic "red herring" expedition with something about Native Americans and Christianity.
let me note, Jefferson like George Washington, thought it might be
better for Native Americans to convert to "Christianity" for entirely
utilitarian (the parlance of America's Founding might use terms like "useful"
or "civilization") reasons.
This theory holds Jesus was
the greatest moral teacher the world has ever known (something
Jefferson believed; though it's not clear Washington believed even
this). It would be better, then, if Native Americans converted to
Christianity for this reason, not because Christianity is true, their
religion is false.
In fact, both Jefferson and
Washington referred to the Native Americans' God as "The Great Spirit." This is similar to today's controversy among Christians whether Muslims
worship the same God as Christians do.
Washington both held, yes, Jews, Christians, Muslims and unconverted
Native Americans all worship the same God. Likewise there is nothing in
the recorded words of either of them that suggest Christianity is true,
the other religions false (otherwise, therefore, Native Americans need to convert
away from their "false" religion). Rather, only that Jesus' moral
teachings were superior. Or that Christianity would better help the
Natives assimilate into American civilization.