I decided to do a search on the net for this archaeologist that site mentioned, and I did not find anything, but I did find this:
Rebuttal to the assumed archeological findings:
In his article, The Arab Christian Heritage, Dr. Labib Kotbi, a Palestinian Roman Catholic, made the following claim:
"Recently Father Pecerillo, a famous Franciscan Archeologist, found more than twenty churches in Madaba at the south of Jordan. From the Forth Century we found houses in Syria, Lebanon, Iraq and Palestine with this inscription in Arabic: Bism El-Lah al-Rahman al-Rahim, that showed that Christians were the first to use this name so as to indicate their belief in the Holy Trinity, more than two hundred years before Islam."
This claim can't be considered as genuine and trustworthy for the following reasons:
Dr. Labib is not a trustworthy and reliable person. He has been found lying and denying some facts about some other issues. Although he claims to be a Christian, he is no more than a politically motivated activist, an anti-Semitic and a partisan of the PLO.
He contradicted his own statement and made some false others in the same article. He stated that the first northern Arabic letters that are found date from the 6th century, while earlier he stated that he found inscriptions with the same characters dating from the 4th and 5th century. According to the Catholic Encyclopedia and Christian historical records, there are no evidence that Arab Christians used Arabic in their literatures, our author claims the opposite.
Before the 8th century and even according to the author's confession, Syria, Lebanon, Iraq and Palestine were not Arabic speaking countries. So how come, all out of a sudden, churches in those areas used Arabic scripts while even Arab Christians weren't using their language in their literature?
Where are those inscriptions now, in which museum? Are there any pictures of them at least?
Other renown Archeologists findings have proved that Allah's origin is related to paganism and worship of Baal rather than Yahweh.
Unless Dr. Labib and his friends provide us with details and evidences and would allow some renown archeologists and experts reinvestigate his claim for approval, his claim is to be and remain classified with hoaxes and myths. Furthermore, even if those claims might get approved, which we highly doubt, that wouldn't be an enough justification to infiltrate Allah as a part of the heritage of the early centuries Orthodox Churches.
This is precisely the same inconsistency I found in that page, he ran his mouth from one end to the other, but he made some fallacious statements.