its a metaphore. a metaphore is a sentence that contradicts its actual meaning.
The horse ran just as fast as the other horses.
There were a lot of extra words in the original. I got rid of duplicate words and the word “too.” I added the word “just” to make the sentence flow smoother.
Answer:
Mr. Hooper had ascended the stairs, and showed himself in the pulpit, face to face with his congregation, except for the black veil. That mysterious emblem was never once withdrawn. ... The veil represents some evil deed hidden in the minister's past that he is afraid to make public.
Depending on the audience, the formality, ideas presented, and vocabulary can change. For example, if you were presenting to children, you wouldn't use complex words.