The photo (left) shows an arrowhead 19 cm (7.5 in.) long that dates to Roman times. Flammable material would be placed in the enclosure behind the tip. Armies sometimes shot a barrage of burning arrows (as shown in the illustration on the right) over the walls of a besieged city to set it ablaze. Paul wrote that the wicked one shoots “burning arrows” at Christians, who can extinguish them with “the large shield of faith.”​—Eph 6:16.