Original Verse:
Ezra Chapter 7 Verse 7And there went up some of the children of Israel, and of the priests, and the Levites, and the singers, and the porters, and the Nethinims, unto Jerusalem, in the seventh year of Artaxerxes the king.

Reference Verses:
Ezra Chapter 7 Verse 11Now 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.
Ezra Chapter 8 Verse 1These are now the chief of their fathers, and this is the genealogy of them that went up with me from Babylon, in the reign of Artaxerxes the king.
Nehemiah Chapter 2 Verse 1And it came to pass in the month Nisan, in the twentieth year of Artaxerxes the king, that wine was before him: and I took up the wine, and gave it unto the king. Now I had not been beforetime sad in his presence.
Ezra Chapter 6 Verse 14And the elders of the Jews builded, and they prospered through the prophesying of Haggai the prophet and Zechariah the son of Iddo. And they builded, and finished it, according to the commandment of the God of Israel, and according to the commandment of Cyrus, and Darius, and Artaxerxes king of Persia.
Ezra Chapter 7 Verse 12Artaxerxes, king of kings, unto Ezra the priest, a scribe of the law of the God of heaven, perfect peace, and at such a time.
Ezra Chapter 7 Verse 24Also we certify you, that touching any of the priests and Levites, singers, porters, Nethinims, or ministers of this house of God, it shall not be lawful to impose toll, tribute, or custom, upon them.
Nehemiah Chapter 10 Verse 28And the rest of the people, the priests, the Levites, the porters, the singers, the Nethinims, and all they that had separated themselves from the people of the lands unto the law of God, their wives, their sons, and their daughters, every one having knowledge, and having understanding;
Ezra Chapter 8 Verse 20Also of the Nethinims, whom David and the princes had appointed for the service of the Levites, two hundred and twenty Nethinims: all of them were expressed by name.
Ezra Chapter 2 Verse 40The Levites: the children of Jeshua and Kadmiel, of the children of Hodaviah, seventy and four.
Ezra Chapter 2 Verse 41The singers: the children of Asaph, an hundred twenty and eight.
Ezra Chapter 2 Verse 42The children of the porters: the children of Shallum, the children of Ater, the children of Talmon, the children of Akkub, the children of Hatita, the children of Shobai, in all an hundred thirty and nine.
Nehemiah Chapter 7 Verse 45The porters: the children of Shallum, the children of Ater, the children of Talmon, the children of Akkub, the children of Hatita, the children of Shobai, an hundred thirty and eight.
Ezra Chapter 4 Verse 7And in the days of Artaxerxes wrote Bishlam, Mithredath, Tabeel, and the rest of their companions, unto Artaxerxes king of Persia; and the writing of the letter was written in the Syrian tongue, and interpreted in the Syrian tongue.