Ezra is sometimes called the Father of Judaism. His work enabled the Jews to re-establish their religion in Jerusalem with the blessing of the Persian King Cyrus, who decreed that the Jewish exiles be allowed to return to Jerusalem and rebuild the Temple. Cyrus feared God, and believed that by allowing this to happen, God would bless his earthly kingdom.
Ezra restored the Temple cult and purified their religion. His work paved the way for the the common practice and theology of the Jewish religion that would be present at the time of Christ.
“Mercy came to us from the Lord our God, who left us a remnant and gave us a stake in his holy place; thus God has brightened our eyes and given us relief in our servitude.” – Ezra