Araunah

agile; also called Ornan (1Chr 21:15), a Jebusite who dwelt in Jerusalem before it was taken by the Israelites. The destroying angel, sent to punish David for his vanity in taking a census of the people, was stayed in his work of destruction near a threshing-floor belonging to Araunah which was situated on Mount Moriah. Araunah offered it to David as a free gift, together with the oxen and the threshing instruments; but the king insisted on purchasing it at its full price (2Sam 24:24; 1Chr 21:24; 21:25), for, according to the law of sacrifices, he could not offer to God what cost him nothing. On the same place Solomon afterwards erected the temple (2Sam 24:16; 2Chr 3:1). (See ALTAR)

EBD - Easton's Bible Dictionary