Ezra 7:6-11, 27-28

this Ezra went up from Babylon. He was a scribe skilled in the Law (the five books) of Moses, which the LORD God of Israel had given; and the king granted him everything that he asked, for the hand of the LORD his God was on him. Some of the sons of Israel, with some of the priests and Levites, the singers and gatekeepers, and the temple servants also went up [from Babylon] to Jerusalem in the seventh year of King Artaxerxes. Ezra came to Jerusalem in the fifth month of the seventh year of the king. For on the first of the first month he started out from Babylon, and on the first of the fifth month he arrived in Jerusalem, because the good hand of his God was on him. For Ezra had set his heart (resolved) to study and interpret the Law of the LORD, and to practice it and teach His statutes and ordinances in Israel. Now this is a copy of the decree that King Artaxerxes gave to Ezra the priest, the scribe [who was] learned in the words of the commandments of the LORD and of His statutes to Israel

Blessed be the LORD, the God of our fathers [said Ezra], who put such a thing as this in the king’s heart, to adorn and glorify the house of the LORD in Jerusalem, and has extended His mercy and lovingkindness to me before the king, his advisers, and all the king’s mighty officials. I was strengthened and encouraged, for the hand of the LORD my God was upon me, and I gathered together outstanding men of Israel to go up with me [to Jerusalem].