Joab gave the list of the people to the king. There were 800,000 men in Israel that could use the sword. And there were 500,000 men in Judah.
It took them nine months and 20 days for them to go through the country. After nine months and 20 days they came back to Jerusalem.
They counted Judah’s family group. The names of all the men who were 20 years old or older and able to serve in the army were listed. They were listed with their families and family groups.