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 1

1:5 I will break also the bar of Damascus, and cut off the inhabitant from the plain of Aven, and him that holdeth the sceptre from the house of Eden: and the people of Syria shall go into captivity unto Kir, saith the LORD.