2 Samuel 24:9

New King James Version

Then Joab gave the sum of the number of the people to the king. And there were in Israel eight hundred thousand valiant men who drew the sword, and the men of Judah were five hundred thousand men.

Cross References

2 Samuel 24:8

So when they had gone through all the land, they came to Jerusalem at the end of nine months and twenty days.

Numbers 1:26

From the children of Judah, their genealogies by their families, by their fathers’ house, according to the number of names, from twenty years old and above, all who were able to go to war: