Religious duties quite often are connected with the office of chieftain, who is also priest or seer and rainmaker—all in one. Correspondingly, in nontribal societies, cultic functions belong to the office of the king. In the 3rd dynasty of Uruk, Lugalzaggisi is described as king of the country, priest of the god Anu (the god of the heavens), and prophet of Nisaba (goddess of grasses and writing).

When a division of functions evolved, the intrinsically royal priestly and other cultic functions were transferred to priests, seers, and other servants of the cult; the old concept of the king as priest, however, survived in some fashion for thousands of years. The Egyptian king was the chief priest of the land and the superior of all priests and other cult functionaries. In many images he is portrayed as presiding over the great festivals and bringing offerings to the gods. Later priests carried out their functions as his representative. In Mesopotamia the king was viewed as the cultic mediator between god and man. As head of all of the priests of the country, he had important cultic functions at the New Year’s festival. In critical situations, the king might issue an oracle of blessing; through him the land would be promised salvation, which was often accompanied by the words, “Fear not!” The Persian king performed the sacrifice at the horse offering and was also the “guardian of the fire.” In all questions of religion he was the highest authority; he was also the most cultivated of the magicians. The king in Ugarit (in Canaan) also carried out priestly functions and as prophet was the receiver of revelations. Like other ancient Middle Eastern monarchs, the Hittite king was the chief priest.

The relationship between sacred kingship and priestly cultic functions has extended over widespread geographic areas and historical eras: East Asia, China, Japan, India, Europe (among the Germanic and Scandinavian kings), Africa (in the great empires), and Madagascar. Sometimes the division of functions brought about a transfer of the royal title to those who carried out cultic functions. In Africa from the earliest times there was a type of king who was called lord of the earth; he originally combined political and cultic functions but, with changing times, retained only the cultic ones. The strict separation of the priestly office from that of the king, as in India, where king and priest belong to different castes—Kshatriya and Brahman, respectively—is an unusual exception, however.

The king may be the recipient of a direct revelation of the will of a god. Thus, in Egypt the pharaoh received a divine oracle through dreams in the temple (a practice known as incubation). In Mesopotamia the duty of the king to ascertain the will of the gods was more strongly emphasized; a directive of the gods could result from omens, dreams, or reading the entrails of offerings. All major undertakings of the king were dependent on directives of the god, who was to be consulted in advance. A direct divine revelation to a king is related in the Hebrew Bible in I Kings, chapter 3, which tells of a dream of the 10th-century-bc Israelite Solomon in which he received the promise of the gift of wisdom. Likewise in Genesis, chapter 41, Yahweh, god of the Hebrews, gives the pharaoh a directive in a dream.

The king as the centre of ruler cults

Although a pharaonic cult occasionally existed in Egypt, the ruler cult differs entirely from sacred kingship because the former came into being from political impulses. The ruler cult, generally developed in a country or empire with many peoples and many religions, was one of the ruler’s means of power. Syncretism, the fusing of various beliefs and practices, often succeeded in bringing together completely different religious and nonreligious motives. Alexander the Great (who established an empire of many peoples and religions), for example, revealed a conscious effort at continuity with the Egyptian kingdom, inasmuch as the oracle of the Egyptian god Amon at Sīwah designated him as the son of Amon and thus the successor of the pharaohs. Among the diadochoi (successors to Alexander) of the first generation, the ruler cult remained limited, but, under Ptolemy II Philadelphus of Egypt (reigned 285–246 bc), it became an established institution that was connected with the deified Alexander. When the ruler cult was carried over to Rome, the emperor Augustus (reigned 27 bc–ad 14) allowed it to be practiced only in the east in connection with the worship of the goddess Roma—though he allowed it to be pursued with fewer restrictions in the newly conquered western provinces; the adaptation of honouring the divine Caesar (or emperor of Rome) soon became, however, an important expression of the unity of the empire. Serious resistance to the imperial cult was encountered only among the two radical monotheistic religions: Judaism (e.g., against Antiochus IV Epiphanes of Syria in the mid-2nd century bc) and Christianity. The Hellenistic and Roman ruler cults never generated a strong religious movement. The sacrifices brought to the king (emperor) date to the ancient custom of bringing tribute to the king (or chief). From this practice, the custom of bringing offerings to the deceased king developed.

Modes of selection and succession

In the beginning, succession to rulership was not necessarily connected with the sacral kingship; the sacral king also could be elected or, through a power struggle, also could receive a divine, magical, or supernatural anointment. If the firstborn son of the king was not stipulated to succeed him or if the king left no children, severe struggles for the succession often occurred, generally resulting in a change of dynasty. The death of a king often was kept secret until the succession was assured, because of potential danger to the people and country. To counteract problems of succession, there were rituals to secure the continuity of the sacral power. In ancient cultures the successor of the dead chief was brought into physical connection with his predecessor, his utensils, or his clothing—he had to stay, for example, in the home of the dead chief and use his utensils. The funeral of the dead king took place after the new king was established in his office or just before his coronation (as in Egypt). Efforts to secure the succession show high regulatory standards; in Egypt a complicated succession theology linked the new and old king as Osiris and Horus. During the lifetime of his father, the crown prince could be designated as coregent. The designation of the successor often came through an oracle, a sign, or some other manifestation of the word of the god; Thutmose III of Egypt (reigned 1504–1450 bc), for example, reported how he was designated to the succession through the oracle of the god Amon. In ancient Iran, after an interregnum, the election of the king took place through an omen. The king was chosen by the god; sometimes he was described as divinely predestined in the womb of his mother as the ruler.