What does dickens want to reveal about joes charater with this statement

She is a punishing, angry tyrant; he is compassionate and good. Joe is extremely important in that he is Pip's ultimate father figure to whom Pip returns at the novel's end. Mrs. Joe provides the practical means for Joe to become this father figure, since he is her husband and she is Pip's mother figure.

She is a punishing, angry tyrant; he is compassionate and good. Joe is extremely important in that he is Pip's ultimate father figure to whom Pip returns at the novel's end. Mrs. Joe provides the practical means for Joe to become this father figure, since he is her husband and she is Pip's mother figure.