There are some dreams and visions scattered around the Old Testament, but no book as the kind of concentration of dreams as Daniel. Kings dream, and the prophet dreams. In Esther too, the dream of Ahasuerus is the turning point of the story. Zechariah sees a series of visions in the night. Something new is afoot in the exile and after. Night becomes bright with dreams and visions.

Perhaps this is a sign that the promise of Joel receives an initial fulfillment: The Spirit has come, and the young men begin to see visions and old men to dream dreams.