John Gill, on Esth 9:18

“But they that were killing in the city of Susan, were employed in the slaughter on the thirteenth and fourteenth day of the same month: and on the fifteenth day they rested. And therefore they appointed that day to be a holy day of feasting and gladness.”

“And Mordecai wrote these things,.... The transactions of those two days, and the causes of them, as well as the following letter; some conclude from hence that he was the penman of the book; and so he might be, but it does not necessarily follow from hence: and sent letters unto all the Jews that were in all the provinces of the King Ahasuerus, both nigh and far; such as were near the city Shushan, and those that were at the greatest distance from it; these were more especially the things he wrote.”

Imported from an open dataset — not yet checked against the printed edition.