As what kind of person does Reverend Hale emerge? Can you sympathize with his inability to judge clearly in the first two acts of The Crucible?

I understand why Hale acted the way that he did in the beginning of the play.  He comes to Salem armed with both his beliefs and his knowledge, provided by his many books, of how to cleanse a witch, how to identify a witch, and so on.  He really has good intentions, his source is actually the bible, he is using the good book as the basis of his belief that witches exist in the world.

Reverend Hale might be a little naive about the presence of evil in the world, as a man of God, he knows that there is evil, but maybe in the beginning he can't identify it.

At the end of "The Crucible," Reverend Hale is a man consumed with guilty purpose.  He has contributed to the deaths of many innocent people.  As a man of God, he seeks inspiration and forgiveness from God.  Although he is unsucessful in his quest to save John Proctor, Reverend Hale emerges with a greater understanding of the nature of evil and where to find it, how to identify it. 

He has witnessed the corruption of Danforth and the other judges as they attempt to protect themselves from scrutiny after they ordered innocent people to be executed. Hale has truly seen the face of evil.