Greg raised the question of Obama's religion at http://www.fivedoves.com/letters/nov2012/greg1120.htm. there is a possibility that most people have not thought of . Obama may not be a Muslim or a Christian , but a universalist, who probably has more sympathy for Islam than most other religions. That would explain a lot of things.
However, the ring he wears would again be proof that he could not be the false messiah, because if he wears a ring that says , "There is no god but Allah", how could he be the man of whom it is said,
"He will show no regard for the gods
of his fathers; and neither the desire
of women, nor any god, shall he regard;
for he shall magnify himself above all."
Obama's father was a Muslim, his mother an atheist, and his granparents attended a Christian Church.