Ezra 4:5

5 and hiring against them, plotting to frustrate their counsel, all the days of Cyrus king of the Persians, and until the reign of Darius king of the Persians.

Ezra 4:5 Meaning and Commentary

Ezra 4:5

And hired counsellors against them, to frustrate their purpose,
&c.] Either to advise and persuade the king of Persia's officers in those parts not to supply them with money, or to influence the great men at his court to get the edict revoked: and this they did

all the days of Cyrus king of Persia;
who, though the hearty friend and patron of the Jews, yet being engaged in wars abroad with the Lydians and Scythians, and leaving his son as viceroy in his absence, who was no friend unto them, the work went on but slowly, attended with interruptions and discouragements:

even until the reign of Darius king of Persia;
who was Darius Hystaspis, between whom and Cyrus were Cambyses the son of Cyrus, and Smerdis the impostor, who pretended to be Smerdis, the brother of Cambyses; a space of about fifteen years.

Ezra 4:5 In-Context

3 then Zorobabel, and Jesus and the rest of the heads of the families of Israel said to them, not for us and you to build a house to our God, for we ourselves will build together to the Lord our God, as Cyrus the king of the Persians commanded us.
4 And the people of the land weakened the hands of the people of Juda, and hindered them in building,
5 and hiring against them, plotting to frustrate their counsel, all the days of Cyrus king of the Persians, and until the reign of Darius king of the Persians.
6 And in the reign of Assuerus, even in the beginning of his reign, they wrote a letter against the inhabitants of Juda and Jerusalem.
7 And in the days of Arthasastha, Tabeel wrote peaceably to Mithradates and to the rest of his fellow-servants: the tribute-gatherer wrote to Arthasastha king of the Persians a writing in the Syrian tongue, and interpreted.

The Brenton translation of the Septuagint is in the public domain.