29 “ ‘This will be the sign to you that I will punish you in this place,’ declares the LORD, ‘so that you will know that my threats of harm against you will surely stand.’

Read Jeremiah 44:29 Using Other Translations

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:
This shall be the sign to you, declares the LORD, that I will punish you in this place, in order that you may know that my words will surely stand against you for harm:
“‘And this is the proof I give you,’ says the LORD, ‘that all I have threatened will happen to you and that I will punish you here.’