2nd Samuel 24:9

6 Then they came to Gilead, and to the land of the Hittites under Hermon; and they came to Dan, and from Dan they came round to Zidon,

7 And to the walled town of Tyre, and to all the towns of the Hivites and the Canaanites: and they went out to the South of Judah at Beer-sheba.

8 So after going through all the land in every direction, they came to Jerusalem at the end of nine months and twenty days.

9 And Joab gave the king the number of all the people: there were in Israel eight hundred thousand fighting men able to take up arms; and the men of Judah were five hundred thousand.

10 And after the people had been numbered, David's heart was troubled. And David said to the Lord, Great has been my sin in doing this; but now, O Lord, be pleased to take away the sin of your servant, for I have done very foolishly

11 And David got up in the morning; now the word of the Lord had come to the prophet Gad, David's seer, saying,

12 Go and say to David, The Lord says, Three things are offered to you: say which of them you will have, and I will do it to you.