Religion
Religion in Spain was shaped by the spread of Roman control. Along the eastern coast and in the Baetis valley, the anthropomorphic deities of the Romans absorbed or replaced earlier nonanthropomorphic gods, particularly in the Romanized towns and cities. In areas of Greek and Phoenician colonization, local gods were readily identified with Roman ones, the most-striking example being the cult of Hercules/Melqart at Gades. In the north and west, native deities survived longer. In the imperial period the worship of the emperor was widespread, especially in the provincial capitals, where it provided a focus for expressions of loyalty to the emperor, and priesthoods in the imperial cult were an important part of the careers of local dignitaries. Mystery religions from the eastern Mediterranean appeared in the 1st and 2nd centuries ce, particularly that of the Egyptian goddess Isis. Christianity became established in the 2nd century, and the extent of its organization is attested not only by accounts of martyrdoms during the 3rd century but also by the records of one of the earliest councils at Elvira, about 306. It is noteworthy that Hosius (Ossius; c. 257–357), bishop of Corduba, acted as religious adviser to the emperor Constantine after his conversion in 312.