How long did it take to investigate all the cases?
Ezra 10:17 (ESV)
17and by the first day of the first monththey had come to the end of all the men who had married foreign women.
The first day of the tenth month was ten days after the assembly had met in the rain. With the work completed on the first day of the first month, it took a total of three months to investigate and deal with all the cases.
17 and by the first day of the first month they had come to the end of all the men who had married foreign women.