That's Ezra. He arrived from Babylon, a scholar well-practiced in the Revelation of Moses that the GOD of Israel had given. Because GOD's hand was on Ezra, the king gave him everything he asked for.
Some of the Israelites--priests, Levites, singers, temple security guards, and temple slaves--went with him to Jerusalem. It was in the seventh year of Artaxerxes the king.
Ezra had scheduled their departure from Babylon on the first day of the first month; they arrived in Jerusalem on the first day of the fifth month under the generous guidance of his God.
What follows is the letter that King Artaxerxes gave Ezra, priest and scholar, expert in matters involving the truths and ways of GOD concerning Israel:
I hereby decree that any of the people of Israel living in my kingdom who want to go to Jerusalem, including their priests and Levites, may go with you.
You are being sent by the king and his seven advisors to carry out an investigation of Judah and Jerusalem in relation to the Teaching of your God that you are carrying with you.
along with all the silver and gold that has been collected from the generously donated offerings all over Babylon, including that from the people and the priests, for The Temple of their God in Jerusalem.
Use this money carefully to buy bulls, rams, lambs, and the ingredients for Grain-Offerings and Drink-Offerings and then offer them on the Altar of The Temple of your God in Jerusalem.
I, Artaxerxes the king, have formally authorized and ordered all the treasurers of the land across the Euphrates to give Ezra the priest, scholar of the Teaching of the God-of-Heaven, the full amount of whatever he asks for
up to a hundred talents of silver, six hundred and fifty bushels of wheat, and six hundred and seven gallons each of wine and olive oil. There is no limit on the salt.
Everything the God-of-Heaven requires for The Temple of God must be given without hesitation. Why would the king and his sons risk stirring up his wrath?
Also, let it be clear that no one is permitted to impose tribute, tax, or duty on any priest, Levite, singer, temple security guard, temple servant, or any other worker connected with The Temple of God.
I authorize you, Ezra, exercising the wisdom of God that you have in your hands, to appoint magistrates and judges so they can administer justice among all the people of the land across the Euphrates who live by the Teaching of your God. Anyone who does not know the Teaching, you teach them.
Not only that, he caused the king and all his advisors and influential officials actually to like me and back me. My God was on my side and I was ready to go. And I organized all the leaders of Israel to go with me.