This is adapted from my notes for today’s daily reading from the Chumash (Pentateuch). If you email me at email@example.com, I can add you to the daily email list for notes on the Chumash and the gospels.
An earlier promise very similar to this one is in Deuteronomy 4:29-31.
Tigay (JPS Torah Commentary: Deuteronomy) points out the repeated use, with different connotations, of the word ??? shuv (return, turn). We will bring back (hashevota) God