Thank you for the explanation - I see the archives are full on this so I
will scan the history.
The theology is simple; such a construction in Deut 6:5 ff could be called
prevenient grace; or the imperative interpreted as completed promise. Such a
play on conjugation is expressible in Hebrew through the mechanism of the
language you have described: a perfect becoming a future and as such
emphasizing the continuity of the covenant of love achieved as if from the
beginning.