TSK · 2 Kings 17:8

You shall not bow down to their gods, nor serve them, nor follow their practices, but you shall utterly overthrow them and demolish their pillars.

(for all these abominations have the men of the land done, that were before you, and the land became defiled);

take heed to yourself that you not be ensnared to follow them, after that they are destroyed from before you; and that you not inquire after their gods, saying, "How do these nations serve their gods? I will do likewise."

Whereupon the king took counsel, and made two calves of gold; and he said to them, "It is too much for you to go up to Jerusalem. Look and see your gods, Israel, which brought you up out of the land of Egypt!"

He did very abominably in following idols, according to all that the Amorites did, whom Yahweh cast out before the children of Israel.

King Ahaz went to Damascus to meet Tiglath Pileser king of Assyria, and saw the altar that was at Damascus; and king Ahaz sent to Urijah the priest the fashion of the altar, and its pattern, according to all its workmanship.

However they did not listen, but they did what they did before.

but mixed themselves with the nations, and learned their works.

Ephraim is oppressed, he is crushed in judgment; Because he is intent in his pursuit of idols.