2 Samuel 24:21

Overview - 2 Samuel 24
1	David, tempted by Satan, forces Joab to number the people.
5	The captains, in nine months and twenty days, bring the muster of thirteen hundred thousand fighting men.
10	David repents, and having three plagues propounded by God, chooses the three days' pestilence.
15	After the death of three score and ten thousand, David by prayer prevents the destruction of Jerusalem.
18	David, by God's direction, purchases Araunah's threshing floor; where having sacrificed, the plague stays.

2 Samuel 24:21  (King James Version)
And Araunah said, Wherefore is my lord the king come to his servant? And David said, To buy the threshingfloor of thee, to build an altar unto the LORD, that the plague may be stayed from the people.