'Altar' in the Bible

And Gad came that day to David, and said unto him, Go up, rear an altar unto Jehovah in the threshing-floor of Araunah the Jebusite.

And Araunah said, Wherefore is my lord the king come to his servant? And David said, To buy the threshing-floor of thee, to build an altar unto Jehovah, that the plague may be stayed from the people.

And David built there an altar unto Jehovah, and offered burnt-offerings and peace-offerings. So Jehovah was entreated for the land, and the plague was stayed from Israel.