Did the Abrahamic covenant promise a King?
Yes, the Abrahamic covenant included the promise that at some future day God in the flesh would be their King. Along with a nation of people and a geographical area of land, the covenant promised the Messiah and Redeemer, who would reign as King over that nation.
Les explains that the Abrahamic covenant had three main tenets: God would make of Abraham a nation of people, give them their own geographical area of land, and at some future day He, in the person of God in the flesh, would be their King. Les points out that a nation in a land requires law and order and an economy, which necessitates a government. Thus the promise of a King is inherent in the covenant. That King, Les identifies, is the Messiah and Redeemer. This promise is part of the prophetic program that runs from Abraham to Christ's first advent.