וַעֲבַדְתֶּם־שָׁ֣ם אֱלֹהִ֔ים מַעֲשֵׂ֖ה יְדֵ֣י אָדָ֑ם עֵ֣ץ וָאֶ֔בֶן אֲשֶׁ֤ר לֹֽא־יִרְאוּן֙ וְלֹ֣א יִשְׁמְע֔וּן וְלֹ֥א יֹֽאכְל֖וּן וְלֹ֥א יְרִיחֻֽן׃
And there ye shall serve gods, the work of men’s hands, wood and stone, which neither see, nor hear, nor eat, nor smell.
Read kabbalistic (mystical) interpretation of Deuteronomy 4:28: and classical mystical sources.