Mithra is the Persian god of the rising sun, contracts, covenants, and friendship. He also oversaw the orderly change of the seasons, maintained cosmic order, and was responsible for bestowing divine grace on kings, legitimizing their rule and, as a protector of the faithful, was also invoked by warriors before battle and so became known as a god of war.
This is a companion discussion topic for the original content at https://www.worldhistory.org/Mithra/.