Note 598 — Chapter VI · THE MYTH OF CIVILISATION AND THE FIRST SHAPING OF HEBREW RELIGION.
R. (Russell) Martineau translation
I believe the historical narrative in Ex. XXXII. 26–29 is to be taken in this sense. It is solar worship that is forcing its way into the strictly nomadic religion of the Hebrews, and the Levites are guardians of the nomadic religion.