The original Pledge of Allegiance (written in the 1800s) had no reference to any sort of invisible guy. That was added in the 1950s.
The US motto 'in god we trust' was not made official until the '50s as well. E pluribus unum was used prior to that, and Franklin wanted the official motto to be 'Mind your business'.
Personally, I think the founding fathers did a good job with not including this stuff as they knew that religion was best kept in ones own church and personal life, rather than emulating a Taliban-style religious nation for Christians.
And since I bear no ill will towards those of other religions, I sincerely hope that you are all touched and blessed by His Noodly Appendage.
Ramen.
