Did Rashi Notice a Janus Parallelism in Ezek 20:37?

Abstract

Rashi seems to have combined two understandings of māsōret (Ezek. 20:37): “restraining fetter (mōsēr)” and “divine promises God had handed down (māsar).”  “Fetter” looks backwards in the verse to God's yoke of obligations and forwards in the verse to the rewards of “the inherited covenantal promise”. Rashi's co-ordination of dual roots in his brief paraphrase seems to anticipate what modern scholars call “Janus parallelism”.