Komentarz do Izajasza 61:7

Instead of your shame which was twofold, even they would constantly bemoan their disgrace as their lot. That is to say that instead of until now My people were constantly bemoaning disgrace, their lot... There are instances of רִנָּה that is an expression of mourning. Comp. (Lam. 2:19) “Rise, cry (רֹנִּי) at night,” and comp. (I Kings 22:36) “A cry (הָרִנָּה) passed through the camp,” concerning Ahab’s death.

משנה Double. The verb you shall inherit is to be supplied.

ותחת כלמה═ובלמה And for confusion.

Therefore in their land, etc.

This is the explanation of the word double in the first part of the verse.