2 Samuel 24:4-15

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. But David’s heart (conscience) troubled him after he had counted the people. David said to the LORD, “I have sinned greatly in what I have done. But now, O LORD, please take away the sin of Your servant, for I have acted very foolishly.” When David got up in the morning, the word of the LORD came to the prophet Gad, David’s seer, saying, “Go and say to David, ‘Thus says the LORD, “I am giving you three choices; select one of them for yourself, and I will do it to you.” ’ ” So Gad came to David and told him, and said to him, “Shall seven years of famine come to you in your land? Or will you flee three months before your enemies as they pursue you? Or shall there be three days of pestilence (plague) in your land? Now consider this and decide what answer I shall return to Him who sent me.” Then David said to Gad, “I am in great distress. Let us fall into the hands of the LORD, for His mercies are great, but do not let me fall into the hands of man.” So the LORD sent a pestilence (plague) [lasting three days] upon Israel from the morning until the appointed time, and seventy thousand men of the people from Dan to Beersheba died.