1 Chronicles 21:16–27
16 And David lifted his eyes and saw the angel of the Lord standing between earth and heaven, and in his hand a drawn sword stretched out over Jerusalem. Then David and the elders, nclothed in sackcloth, fell upon their faces. 17 And David said to God, “Was it not I who gave command to number the people? It is I who have sinned and done great evil. But these sheep, what have they done? Please let your hand, O Lord my God, be against me and against my father’s house. But do not let the plague be on your people.”
18 Now othe angel of the Lord had commanded Gad to say to David that David should go up and raise an altar to the Lord on the threshing floor of Ornan the Jebusite. 19 So David went up at Gad’s word, which he had spoken in the name of the Lord. 20 Now Ornan was threshing wheat. He turned and saw the angel, and his four sons who were with him hid themselves. 21 As David came to Ornan, Ornan looked and saw David and went out from the threshing floor and paid homage to David with his face to the ground. 22 And David said to Ornan, “Give me the site of the threshing floor that I may build on it an altar to the Lord—give it to me at its full price—that the plague may be averted from the people.” 23 Then Ornan said to David, “Take it, and let my lord the king do what seems good to him. See, I give the oxen for burnt offerings and the threshing sledges for the wood and the wheat for a grain offering; I give it all.” 24 But King David said to Ornan, “No, but I will buy them for the full price. I will not take for the Lord what is yours, nor offer burnt offerings that cost me nothing.” 25 So David paid Ornan p600 shekels1 of gold by weight for the site. 26 And David built there an altar to the Lord and presented burnt offerings and peace offerings and called on the Lord, and the Lord2 qanswered him with fire from heaven upon the altar of burnt offering. 27 Then the Lord commanded the angel, and he put his sword back into its sheath.
A shekel was about 2/5 ounce or 11 grams