Ezra 10:2-3

2Shecaniah the son of Jehiel, of the sons of Elam, said to Ezra, “We have been unfaithful to our God and have married foreign women from the peoples of the land; yet now there is hope for Israel in spite of this.

3Therefore let us now make a covenant with our God to send away all the [foreign] wives and their children, in accordance with the advice of my lord and of those who tremble [in reverent obedience] at the commandment of our God; and let it be done in accordance with the Law.