Ezra
Ezra 4:6ESV·traditional attribution

And in the reign of Ahasuerus, in the beginning of his reign, they wrote an accusation against the inhabitants of Judah and Jerusalem.

Matthew Henry Presbyterian @wholebiblehenry

Cyrus stedfastly adhered to the Jews' interest, and supported his own grant. It was to no purpose to offer any thing to him in prejudice of it. What he did was from a good principle, and in the fear of God, and therefore he adhered to it.

Commenting on Ezra 4:6-16

John Gill Reformed Baptist @doctorgill

And in the days of Artaxerxes,.... The same with Ahasuerus, in the preceding verse; and who also is Cambyses, which is his name in Heathen authors, Artaxerxes being a common name to the kings of Persia; though some (f) think this was Smerdis, the magician and impostor, who was between Cambyses and Darius; but as he reigned but seven months, it is not very likely...

Jamieson-Fausset-Brown Reformed @jfbcommentary

in the reign of Ahasuerus, in the beginning of his reign, wrote they . . . an accusation--Ahasuerus was a regal title, and the king referred to was successor of Darius, the famous Xerxes.