But why are the ring and staff also considered signs of kingship?
Kingship means the legitimation to "rule" or, in other words, to initiate new reality in the living matter. This comes to bear in three different areas: on the one hand in one's own life, on the other hand in the couple relationship and last but not least, as third, in the rule over people and country.
(See fig. right Codex Hammurabi, 2.25 m, c. 1800 B.C., Louvre, Paris. This stele, over 2 m high and in the shape of a giant phallus, contains an early collection of legal sayings in cuneiform script. The relief at the top shows Hamurabi receiving a ring and staff from the god Shamash as a sign of kingship. Shamash is an animus figure, see Wild Bull / Ferryman in the Gilgamesh epic).
1. in the couple relationship: the goddess and her hero king
In terms of the couple relationship, the ring and staff represent the union between masculine and feminine, which leads to wholeness and to new reality.
[S. Male and female, the two primordial forces of creation.]
Thereby the male side stands for the loving consciousness and the female side for the living, receiving and reality giving birth to matter. If the woman as his fiancée was once his "promised" land, this is now (with the sexual intercourse) "conquered" and "taken". Now the man as her king is the one who is authorized to bring forth new reality (e.g. a child) with his seed and his word (in her).
[S. The Virgin - Miracle Working Love and Potential and The Woman as Goddess and the Man as Her Hero King].