Ezra 7:7-10

71Some 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.

8And he came to Jerusalem in the fifth month, which was in the seventh year of the king. 9For 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, 2because the good hand of his God was upon him. 10For Ezra had 3firmly resolved to study the Law of the Lord and to practice it, and 4to teach His statutes and ordinances in Israel.