1 Chronicles 21:24-27

And king David said to Ornan, Nay; but I will verily buy it for the full price: for I will not take that which is thine for the LORD, nor offer burnt offerings without cost. So David gave to Ornan for the place six hundred shekels of gold by weight. And David built there an altar unto the LORD, and offered burnt offerings and peace offerings, and called upon the LORD; and he answered him from heaven by fire upon the altar of burnt offering. And the LORD commanded the angel; and he put up his sword again into the sheath thereof.