Ezra 7:6-10

6this Ezra came up from Babylon. He was a teacher well versed in the Law of Moses, which the LORD, the God of Israel, had given. The king had granted him everything he asked, for the hand of the LORD his God was on him.

7Some of the Israelites, including priests, Levites, musicians, gatekeepers and temple servants, also came up to Jerusalem in the seventh year of King Artaxerxes. 8Ezra arrived in Jerusalem in the fifth month of the seventh year of the king. 9He had begun his journey from Babylon on the first day of the first month, and he arrived in Jerusalem on the first day of the fifth month, for the gracious hand of his God was on him.

10For Ezra had devoted himself to the study and observance of the Law of the LORD, and to teaching its decrees and laws in Israel.