John Gill Commentary Nehemiah 11:24

"And Pethahiah the son of Meshezabel, of the children of Zerah the son of Judah, was at the king`s hand in all matters concerning the people." — Nehemiah 11:24 (ASV)

And Pethahiah the son of Meshezabeel, of the children of
Zerah, the son of Judah
The twin brother of Pharez, (Genesis 38:30) was

at the king's hand in all matters concerning the people ;
to speak for them to the king, as Jarchi; when they had a favour to ask of him, a petition to present to him, he delivered it for them, and by him the king returned the answer.