Ezra 10:3

Then everyone who trembled at the words of the God of Israel on account of the unfaithfulness of the exiles gathered to me, and I sat appalled until the evening offering.

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

“So now, make confession to Yahweh, the God of your fathers, and do His will; and separate yourselves from the peoples of the land and from the foreign wives.”

All these had taken up foreign women as wives, and some of them had wives by whom they had children.