isn’t “the word spoken by Jeremiah” at all,
Sure it is. That is what the verse says. Jeremiah was applying God’s word in Leviticus and the irony of the curse for breaking the covenant .Before Judah’s 70 year desolation in Bavel, Zedekiah had proclaimed a Jubilee for the land and Jehovah turned back until Zedekiah backslided then the deportation.
Any written statement such as laws or Scripture can be interpreted more than one way. You have you view. Good luck.