2 Samuel 24:4-9

Nevertheless, the king’s word prevailed against Joab and the commanders of the army. So they went from the king’s presence to take a census of the people of Israel. They crossed over the Jordan and camped in Aroer, on the south side of the city which is in the middle of the river valley [of the Arnon] toward Gad, and on toward Jazer. Then they came to Gilead and to the land of Tahtim-hodshi, and they came to Dan-jaan and around to Sidon, and they came to the stronghold of Tyre and to all the cities of the Hivites and Canaanites, and they went out to the south of Judah, to Beersheba. So when they had gone about through all the land [taking the census], they came to Jerusalem at the end of nine months and twenty days. And Joab gave the sum of the census of the people to the king. In Israel there were 800,000 valiant men who drew the sword, and the men of Judah were 500,000.