And thou, Ezra. This conclusion would be by itself sufficient to remove the document out of the ordinary category of "decrees" or "edicts," and to render it, what it is called in verse 11, nishtevan, "a letter."
After the wisdom of thy God, that is in thy hand. i.e. "that is in thy possession." Set magistrates and judges. Both the words used are derived from roots signifying "to judge," and it is difficult to draw any distinction between them.
The one translated "magistrates" is that which gives its title to the Book of "Judges." Which may judge all the people that are beyond the river, all such as know the laws of thy God. The latter clause is probably intended to be limitative of the former, and to consign to Ezra's government only the Jewish portion of the population, in which, however, are to be reckoned the proselytes (see comment on Ezra 6:21).
And teach ye them that know them not. As the other inhabitants of Syria were not Zoroastrians, but idolaters, Ezra was given free permission to spread his religion among them.