This period was divided into three parts:
- The first part was the part, which soon followed the Christ time. It was called the Age of Prophets (30-95 A.C).
- The second part extended for a century, from the end of the first century to the end of the second century. The third part ended when Constantine adopted Christianity in (312 A.C.).

In the second half of the third century A.C, a demostic rebellion took place against Rome led by the Prince of Tadmor, “Ozayneh” and his spouse “Zannobia” after him. “Orliyan” could put an end to this attempt in (272) A.C. on the account of Tadmor.

In (392 A .C .) the Roman Empire was divided into two parts, namely; the eastern , and the western. Thiodosios “bequeathed one of his sons , called , Arcdios” the eastern part so as to be an independent ruler. So, he started his rule from (395-408). The second son (Hinorios) inherited the western part and independently ruled it, too, from (395-423).

It is worthy to say that about seventeen emperors (four of them forced the throne) ruled after constantine. It was said that “Jestinian Yostinos” the second, had Bizante throne in (565-578), “Tibarious the Second” from (578-582) and Morris (582-602), Focas (602-610), Hiraql (610-641).

The wars between Bizantes and Sasans were fluxuating in violence and tranquility. The two countries often signed several reconciliation agreements and treaties, which didn’t last long as they were nullified, so wars resumed once more between them both.

From the years (610-622), Persians launched many attacks on Romans and gained victory in their campaigns. They plundered Antakia, Damascus and Jerusalem in (614) and “Abarweez” took possession of the holy cross but the predominant wars, besides other things, over strained both countries. So, they could not confront Arabs who overturned the Sasan State, Great Syria and Egypt from the Bizantes in the decisive battle Al Yarmouk (15H/636 A.C.).