A comma after an unfamiliar word
Faustus first began to believe that human salvation was impossible because he read the scripture and saw that all human beings sin and are D word.
In addition, he had been misled by Mephastophills, who caused him to misread the scriptures.
I found this for your question
Answer:
I think go off is a phrase used hype someone and I think sheesh is an expression for astonishment though this is just a guess
Explanation: