EZRA 7:6-10 (NASB)

6 So this Ezra went up from Babylon, and he was a scribe skilled in the Law of Moses, which the Lord God of Israel had given; and the king granted him all [a]he requested because the hand of the Lord his God was upon him. 7 Some of the sons of Israel and some of the priests, the Levites, the singers, the gatekeepers, and the temple servants went up to Jerusalem in the seventh year of King Artaxerxes.

8 And he came to Jerusalem in the fifth month, which was in the seventh year of the king. 9 For on the first day of the first month he began to go up from Babylon; and on the first of the fifth month he came to Jerusalem, because the good hand of his God was upon him. 10 For Ezra had firmly resolved to study the Law of the Lord and to practice it, and to teach His statutes and ordinances in Israel.