tnHeb “plans from long ago [in] faithfulness, trustworthiness.” The feminine noun אֱמוּנָה (’emunah, “faithfulness”) and masculine noun אֹמֶן (’omen, “trustworthiness”), both of which are derived from the root אָמַן (’aman), are juxtaposed to emphasize the basic idea conveyed by the synonyms. Here they describe the absolute reliability of the divine plans.