This will be a sign to you that I will punish you in this place, declares the LORD, so that you may know that My threats of harm against you will surely stand.
KJV
And this [shall be] a sign unto you, saith the LORD, that I will punish you in this place, that ye may know that my words shall surely stand against you for evil:
ASV
And this shall be the sign unto you, saith Jehovah, that I will punish you in this place, that ye may know that my words shall surely stand against you for evil: