Faith is Goodman Browns wife. One of the earliest uses of symbolism is Faith and her pink ribbons. Brown returns to his village believing he has rejected the devil, but he has in fact embraced him.
There is intentionally not a great deal of subtlety in these symbols, as Hawthorne clearly wants them to be obvious to even the least attentive reader. As the story by Nathaniel Hawthorne progresses, in a clearing, there is a large fire and what appears to be a Satanic or demonic ritual taking place and Goodman Brown thinks he sees his dead father.
Where this agreement usually ends, however, is on the question of whether Hawthorne is implying that man is inherently evil. Nathaniel Hawthorne was descended from one John Hawthorne, a judge who had presided over the infamous witch trials there.
What is certain is that he lives and dies in pain because his belief in his righteousness isolates him from his community.