Heritage is the same word used in verse 7.

The manner in which Israel has become like a lion is defined in what follows: she has lifted up her voice [roared] against me; that is, she has become hostile to me. Revised English Bible has “My own people have turned on me like lions from the jungle; they roar against me, therefore I hate them.”

Quoted with permission from Newman, Barclay M. and Stine, Philip C. A Handbook on Jeremiah. (UBS Helps for Translators). New York: UBS, 2003. For this and other handbooks for translators see here .