For the two clauses are not only parallel, but synonymous. כִּזְבֵיהֶם, their lies, are their idols, as we may see from the relative clause, since “walking after” (bâlakh 'achărē) is the standing expression for idolatry. Amos calls the idols lies, not only as res quae fallunt (Ges.), but as fabrications and nonentities ('ĕlīhīm and hăbhâlīm), having no reality in themselves, and therefore quite unable to perform what was expected of them.