Ezra 10:5-6
Ezra 10:5-6 AMP
Then Ezra stood and made the leaders of the priests, the Levites, and all Israel, take an oath that they would act in accordance with this proposal; so they took the oath. Then Ezra got up from before the house of God and went into the chamber of Jehohanan the son of Eliashib [and spent the night there]. He did not eat bread nor drink water, for he was mourning over the [former] exiles’ faithlessness.