1 Chronicles 21:28 in the World English Bible
At that time, when David saw that the LORD had answered him in the threshing floor of Ornan the Jebusite, then he sacrificed there.
Context
27 And the LORD commanded the angel; and he put up his sword again into the sheath thereof.
28 At that time when David saw that the LORD had answered him in the threshingfloor of Ornan the Jebusite, then he sacrificed there.
29 For the tabernacle of the LORD, which Moses made in the wilderness, and the altar of the burnt offering, were at that season in the high place at Gibeon.