Ezra 10:3, 9

Now therefore, let us make a covenant with our God to put away all these wives and those who have been born to them, according to the advice of my master and of those who tremble at the commandment of our God; and let it be done according to the law.

So all the men of Judah and Benjamin gathered at Jerusalem within three days. It was the ninth month, on the twentieth of the month; and all the people sat in the open square of the house of God, trembling because of this matter and because of heavy rain.