26 He behaved in the vilest manner by going after idols, like the Amorites the LORD drove out before Israel.)

Read 1 Kings 21:26 Using Other Translations

And he did very abominably in following idols, according to all things as did the Amorites, whom the LORD cast out before the children of Israel.
He acted very abominably in going after idols, as the Amorites had done, whom the LORD cast out before the people of Israel.)
His worst outrage was worshiping idols just as the Amorites had done—the people whom the LORD had driven out from the land ahead of the Israelites.)