'Firing' in the Bible

For my wrath is a flaming fire, burning to the deep parts of the underworld, burning up the earth with her increase, and firing the deep roots of the mountains.

And Abimelech came to the tower and made an attack on it, and got near to the door of the tower for the purpose of firing it.

Then firing the sticks, he let the foxes loose among the uncut grain of the Philistines, and all the corded stems as well as the living grain and the vine-gardens and the olives went up in flames.