In the present work the basis of Judaic Messiahnism is analyzed. Conditions of the Jews in Roman Empire of 70-90 AD are discussed. According to the author, Rome was a classical empire, which for achieving its imperialistic goals, was forced to make concessions. After the dire tragedy of 66-70 AD the Jews were not forbidden to live in accordance with their religious rules (except the period of Domicianus). Following the first Judaic war, the Jewish communities, which were dispersed throughout the civilized world, were consolidated. As a result a powerful union was created the concept of which was the love of Jehovah. The quick spread of Christianity promoted the development of active Judaic proselytism.