NET
5 But, if you do not obey these commands, I solemnly swear that this palace will become a pile of rubble. I, the Lord, affirm it!”’
Darby
5 But if ye will not hear these words, I have sworn by myself, saith Jehovah, that this house shall become a waste.
KJV
5 But if ye will not hear these words, I swear by myself, saith the LORD, that this house shall become a desolation.