1 Chronicles 20:2-4

The Voice

² David took the crown off the head of their king (which weighed about 75 pounds and was bejeweled) and it was placed on his own head. And David took the great riches of the city. ³ He set the people of the city to work with tools of iron: saws, axes and other sharp implements. This David did to all the Ammonite cities before he and his people returned to Jerusalem.

⁴ After David conquered Ammon, war erupted at the city of Gezer in Philistia. Sibbecai (the Hushathite) killed Sippai (a descendant of the giants) and subjugated the city.