Ezra 7:12

For Ezra had prepared his heart to seek the law of the LORD, and to do it, and to teach in Israel statutes and judgments.

Now this is the copy of the letter that the king Artaxerxes gave unto Ezra the priest, the scribe, even a scribe of the words of the commandments of the LORD, and of his statutes to Israel.

I make a decree, that all they of the people of Israel, and of his priests and Levites, in my realm, which are minded of their own freewill to go up to Jerusalem, go with thee.

Forasmuch as thou art sent of the king, and of his seven counsellors, to enquire concerning Judah and Jerusalem, according to the law of thy God which is in thine hand;