Ezra 10:3 - Albert Barnes' Notes on the Bible

Let it be done according to the law - i. e., let a formal “bill of divorcement” be given to each foreign wife, whereby she will be restored to the condition of an unmarried woman, and be free to marry another husband (see Deuteronomy 24:1-2). The facility of divorce among the Jews is well-known. According to many of the rabbis, a bill of divorcement might he given by the husband for the most trivial cause. Thus, no legal difficulty stood in the way of Shechaniah’s proposition; and Ezra regarded it as necessary for the moral and religious welfare of the people.