And David said to Abishai, Now shall Sheba the son of Bichri do us more harm than did Absalom: take thou thy lord's servants, and pursue after him, lest he get him fenced cities, and escape us.
2 Samuel 23:7
But the man that shall touch them must be fenced with iron and the staff of a spear; and they shall be utterly burned with fire in the same place.