Wrath of the Lord like fire

Amos 1:1-15
The words of Amos, one of the shepherds of Tekoa - what he saw concerning Israel two years before the earthquake.
Three sins of Damascus, Gaza, Tyre, Edom,and Ammon, even for four, I will not turn back my wrath. I will set fire to the walls of them that will consume her fortresses.
Amos was a layman: a shepherd and dresser of fig-trees. His home was in Tekon, about 20km south of Jerusalem, on the edge of the Judean desert. But God sent him as his prophet to the northern kingdom of Israel.His base was the religious centre of Bethel, where King Jeroboam I had set up a calf-image when the nation had first split into two rival kingdoms.
Amos lived in the reign of Jeroboam II, Israel's Indian summer of Prosperity and influence. Beneath its affluence, however, the nation was rotten. Amos was sent to denounce the social and religious corruption, and warn of God's impending judgment. But the people turned a deaf ear, as they did to his contemporary, Hosea. And the king's chaplain told him to get back to Judah.
Thirty years after Jeroboam's death, in 722/1, the Assyrians attacked from the north to destroy Samaria and take the people into exile. Israel ceased to exist. But the prophet's voice still sounds down the years, crying out for justice on behalf of the poor and helpless of every age and nation.
Why?
The Syrians are guilt of wanton cruelty; the Philistines of selling their own people. Tyre and Edom have transgressed the laws of kinship. Ammon's atrocities have been committed simply to gain more land.
God is set fire to consume those guilt nations.
How?
Wrath of the Lord like lion from Zion and like fire to consume every wicked man. Fear the Lord for his righteousness.