And Sechenias responded, etc. Josephus says that this Sechenias was the first of the Jerusalemites, and he himself, as befits a leader, with the greatest authority, soon helped Ezra's intention, both by confessing that the people had sinned together with him, and by advising that repentance should be made, by casting off foreign wives, along with the children born from them.
Source: Commentary on Ezra and Nehemiah