this is also a feature of Mishnaic literature, see Ben-David 1967, 1.92, and cf. Ibn Ezra to Deut 6:5, “the heart (hlb) is the mind (hdʿt) and is the designation of the spirit of understanding.” According to rabbinic interpretation, bkl lbbk here implies the personal genii/spirits of the man; one has to serve God with both the good genius/spirit (yeṣer ṭwb) and the evil one (yeṣer raʿ). Compare Tg. Ps.-J. to this verse and Sipre Deut. 32 (Finkelstein 1969, p. 55) with its parallels. Dianoia in
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