Are these two sentences properly worded?

FYI- Berem is the Greenstone Man. Enraged, Tanis tried to kill Berem since he believed that the Green Gemstone Man was responsible for Flint’s death, but Berem’s curse prevented him from truly dying. After Fizban magically disappeared with Flint’s body, Berem revealed the full truth behind his origins, and the reason why he feared the Dark Queen, as well as why the goddess feared him.