Ezra 10:5-6

Then Ezra arose and made the leading priests and Levites and all Israel take an oath that they would do as had been said. So they took the oath. Then Ezra withdrew from before the house of God and went to the chamber of Jehohanan the son of Eliashib, where he spent the night, neither eating bread nor drinking water, for he was mourning over the faithlessness of the exiles.