Complex sentence: University Press of America Wilshire does not make a definitive statement regarding the nature of the violence the epistle may be referring to, but notes that authentein was often used to express the commission of violence, murder or suicide.
Split into simpler sentences: University Press of America Wilshire does not make a definitive statement regarding the nature of the violence the epistle may be referring to. He does highlight, however, that authentein was often used to express the commission of violence, murder or suicide.