Ezra's Covenant:

While Ezra prayed and made confession, weeping and casting himself down before the house of God, a very great assembly of men, women, and children, gathered to him out of Israel, for the people wept bitterly. And Shecaniah the son of Jehiel, of the sons of Elam, addressed Ezra: "we have broken faith with out a God and have married foreign women from the people's of the land, but even now there is hope for Israel in spite of this. Therefore let us make a covenant with our God to put away all of these wives and their children, according to the counsel of my lord and of these who tremble at the commandment of out God, and let it be done according to the Law. Arise for it is your task and we were are with you; be strong and do it." Then Ezra rose and made the leading priests and Levites and all Israel take oath that they would do as had been said. So they took the oath."

AKA-
The Covenant of Faith

Ezra 10:1-5