Ephraim is joined to idols
That is, the ten tribes of Israel, frequently so called after their separation from the rest, because that Jeroboam, by whom the revolt was made, was of that tribe; and because that tribe was the principal of them, and Samaria, the metropolis of their kingdom, was in it: and so the Targum here renders it,
``the house of Israel are joined to idols;''to the calves at Dan and Bethel; to Baal, and other idols, they worshipped: the phrase expresses their strong affection for them, their constant worship of them, and their obstinate persisting therein, and the difficulty there was of bringing them off of it; they cleaved to their idols, were glued, and as it were wedded unto them, and there was no separating of them; as men are, who are addicted to the lusts of the flesh, to the mammon of unrighteousness, or to their own self-righteousness, or to any idol they set up in their hearts as such: hence it follows, let them alone:
``they have left their worship;''the service of God.