Ezekiel 20:39

As for you, O house of Israel
The then present house of Israel, and the elders of it, who were upon the spot with the prophet: go ye, serve ye everyone his idols;
or dunghill gods; since they liked not to serve the true God: this is not giving them leave to serve idols, or approving their idolatrous practices; but is said "ironically", as Kimchi and Ben Melech observe, who compare it with ( Ecclesiastes 11:9 ) : and hereafter also, if ye will not hearken unto me;
not only serve them now, but for the future; seeing ye choose not to hearken to my voice, to obey my laws, and to worship me, and me only; for it suggests, that it was better to attend to the service of the one, or of the other, and not halt between two opinions; but either, if the God of Israel was the true God, then serve him, and him only; but if Baal, or any other Heathen deity, was so, then serve them, and keep serving them: but pollute ye my holy name no more with your gifts and with your
idols;
to worship him along with them, and them along with him; to pretend they worshipped him in them, and offered their gifts and sacrifices to him through them; and so made use of his name as a cover to their idolatrous practices: this was a polluting his name, and was abominable to him.