Isaiah prophesies against Samaria and Jerusalem; Samaria/Israel falls and its people exiled permanently to Assyria, and here’s why: Isaiah 28−29; 2 Kings 17:1−5; 2 Kings 18:9−12; 2 Kings 17:6−41; Isaiah 1:1−20

After taking Samaria (the northern kingdom of Israel), the conquering Assyrians did a bit of  people swap, taking Israelites out of the land and replacing them with people from other conquered lands. The problem was, though:

^{2 Kings 17:26} The people [the Assyrian king] sent to live in the towns of Samaria do not know the religious customs of the God of the land. He has sent lions among them to destroy them because they have not worshiped him correctly.

The king’s solution was practical, send:

^{2 Kings 17:27} Send one of the exiled priests back to Samaria. Let him live there and teach the new residents the religious customs of the God of the land.

They certainly taught worship of the Lord, but not exclusively:

^{2 Kings 17:41} So while these new residents worshiped the Lord, they also worshiped their idols. And to this day their descendants do the same.

What else would you expect from priests that God had likened to drunks?

^{Isaiah 28:7-8} Now, however, Israel is led by drunks
who reel with wine and stagger with alcohol.
The priests and prophets stagger with alcohol
and lose themselves in wine.
They reel when they see visions
and stagger as they render decisions.
Their tables are covered with vomit;
filth is everywhere.

The miracle is that the new residents worshipped God at all.