NET

3 Understand today that the Lord your God who goes before you is a devouring fire; he will defeat and subdue them before you. You will dispossess and destroy them quickly just as he has told you.

Darby

3 Know then this day, that Jehovah thy God is he that goeth over before thee, a consuming fire; he will destroy them, and he will cast them down before thee, and thou shalt dispossess them and cause them to perish quickly, as Jehovah hath said unto thee.

KJV

3 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.