2 Samuel 24:18

Go up. David probably, on receiving God's message, had gone to the tent which he had pitched for the ark in Zion ( 2 Samuel 6:17 ), in order that he might pray there; and while on his way he saw the dark plague cloud coming as the messenger of God's wrath to smite Jerusalem. In an agony of grief, he poured out his prayer that Jerusalem might be spared, and God heard him, and sent Gad a second time to bid him offer sacrifice, that, by making an atonement, he might stand between the dead and the living, as Aaron had done in the wilderness ( Numbers 16:46-48 ) He is therefore to leave the tabernacle, and mount up to the summit on which Araunah's threshing floor was situated. We read in 1 Chronicles 21:28-30 that David wished to go to Gibeon, where the Mosaic tabernacle and altar of burnt offering were, to inquire of God, but that he was afraid, as the angel of the pestilence was smiting outside the walls. This is mentioned as an excuse for his offering at an unconsecrated spot. But it also suggests that David's choice was a submission to a chastisement already at work.