Ezra

The Book of Ezra is the fifteenth book of the Old Testament. In it Cyrus of Persia allows the Jews to rebuild Jerusalem and the temple there, and sends them to do it. However, the (non-Jewish) people who have taken up residence nearby hassle them until the reign of Darius of Persia, who eventually gets the whole thing straightened out. It ends with Ezra convincing all the men of Israel who married wives from other nations to abandon their families (because God hates seeing his people marry members of less holy races).