Amos is the book of the herdsman from Tekoa, a small town in Judah. He receives a direct call from God to prophesy against the unrighteousness of both Judah and Israel. Amos is the first prophet to proclaim that God is the ruler of the whole world.

Amos 3

3:11 Therefore thus saith the Lord GOD; An adversary there shall be even round about the land; and he shall bring down thy strength from thee, and thy palaces shall be spoiled.