Charles Ellicott Commentary Ezra 4:3

"But Zerubbabel, and Jeshua, and the rest of the heads of fathers` [houses] of Israel, said unto them, Ye have nothing to do with us in building a house unto our God; but we ourselves together will build unto Jehovah, the God of Israel, as king Cyrus the king of Persia hath commanded us." — Ezra 4:3 (ASV)

Ye have nothing to do with us. —The account in 2 Kings 17:0 carefully studied will show that the stern refusal of the leaders was precisely ill harmony with the will of God; there was nothing in it of that intolerant spirit which is sometimes imagined. The whole design of the Great Restoration would have been defeated by a concession at this point. The reference to the command of Cyrus is another and really subordinate kind of justification, pleaded as subjects of the King of Persia, whose decree was absolute and exclusive.