2 Samuel 24:10 WEB

⁸  So when they had gone back and forth through all the land, they came to Jerusalem at the end of nine months and twenty days.

⁹  Joab gave up the sum of the numbering 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.

¹⁰  David's heart struck him after that he had numbered the people. David said to Yahweh, I have sinned greatly in that which I have done: but now, Yahweh, put away, I beg you, the iniquity of your servant; for I have done very foolishly.

¹¹  When David rose up in the morning, the word of Yahweh came to the prophet Gad, David's seer, saying,

¹²  Go and speak to David, Thus says Yahweh, I offer you three things: choose you one of them, that I may do it to you.