The roaring of the lion, the voice of the fierce lion, the teeth of the young lions—they are broken.

Here a lion's roar, his voice, and his teeth being broken are used as pictures of the wicked being destroyed. (See: rc://en/ta/man/jit/figs-metaphor)

they are broken

This may be put into active form. Alternate translation: "something breaks them" (See: rc://en/ta/man/jit/figs-activepassive)