2 Samuel 24:5

24:5 They crossed the Jordan and camped at Aroer, on the south side of the city, at the wadi of Gad, near Jazer.

2 Samuel 24:18

David Acquires a Threshing Floor and Constructs an Altar There

24:18 So Gad went to David that day and told him, “Go up and build an altar for the Lord on the threshing floor of Araunah the Jebusite.”