Contradiction with Genesis 49:10
This verse speaks of the scepter not departing from Judah, indicating a royal lineage, which contrasts with Nehemiah 12:34's depiction of individuals as participants in a procession rather than rulers.
Genesis 49:10: The sceptre shall not depart from Judah, nor a lawgiver from between his feet, until Shiloh come; and unto him [shall] the gathering of the people [be].
Contradiction with Jeremiah 1:6
Jeremiah's initial fearfulness contradicts the implied leadership role he may have in Nehemiah 12:34.
Jeremiah 1:6: Then said I, Ah, Lord GOD! behold, I cannot speak: for I [am] a child.
Contradiction with Judges 20:35
In this verse, Benjamin plays a warfaring role, which contrasts with their peaceful assembly for celebration in Nehemiah 12:34.
Judges 20:35: And the LORD smote Benjamin before Israel: and the children of Israel destroyed of the Benjamites that day twenty and five thousand and an hundred men: all these drew the sword.