Ezra
1 Chronicles 27:3BSB·traditional attribution
He was a descendant of Perez and chief of all the army commanders for the first month.
Matthew Henry Presbyterian @wholebiblehenry
We have here an account of the regulation of the militia of the kingdom. David was himself a man of war, and had done great things with the sword; he had brought into the field great armies. Now here we are told how he marshalled them when God had given him rest from all his enemies.
Commenting on 1 Chronicles 27:1-15
Keil & Delitzsch Lutheran @keilanddelitzsch
1Ch 27:3 1Ch 27:3 further relates of him that he was of the sons (descendants) of Perez, and the head of all the army chiefs in the first month (i.e., in the division for the first month).