But understand that today the LORD your God goes across ahead of you as a consuming fire; He will destroy them and subdue them before you. And you will drive them out and annihilate them swiftly, as the LORD has promised you.
KJV
Understand therefore this day, that the LORD thy God [is] he which goeth over before thee; [as] a consuming fire he shall destroy them, and he shall bring them down before thy face: so shalt thou drive them out, and destroy them quickly, as the LORD hath said unto thee.
ASV
Know therefore this day, that Jehovah thy God is he who goeth over before thee as a devouring fire; he will destroy them, and he will bring them down before thee: so shalt thou drive them out, and make them to perish quickly, as Jehovah hath spoken unto thee.