The Persian conquest of Babylon in 539 BC transformed the circumstances of the Judean exiles. The book of Ezra records a decree of Cyrus authorizing the rebuilding of the Temple in Jerusalem and the return of those who wished to participate.
Later Persian kings appear prominently in the restoration period. Darius confirmed the authorization for the Temple, and Artaxerxes is associated with the missions of Ezra and Nehemiah.
The book of Esther is set within the Persian imperial court and describes the Jewish population dispersed throughout the empire.
Daniel contains visions involving the Medes and Persians and portrays the transition from Babylonian to Medo-Persian power.