Wells and Wanderers - Amorites

Sometimes freedom and family are found in unexpected places.

Inanna, an Amorite chieftain's daughter, craves to be free as the eagles that fly above her hometown.
Utu, her loyal twin, just wants to keep his wayward sister out of trouble.
Neither succeeds, and their dreams are uprooted as they're sold into slavery. During their forced travels, they encounter nations they'd only known from stories, palaces beyond description, and fickle kings claiming to be all-powerful deities.
Yet when serving the wandering household of Avram and Sarai from Ur, they encounter a mystery god intent on upturning national boundaries, calling new loyalties, and directing the eyes of his followers to dreams vaster than the star-filled sky.
But what has this god of unexpected paths and promises to offer two Amorite slaves?