Why do Proctor and Rebecca speak out against Hale's coming in The Crucible?
Proctor and Rebecca understand that when the search for witches begins it will be difficult to control. Rebecca suggests that if they are going to actively search for a solution, the town should do so as a whole.
"...send Reverend Hale back as soon as he come. This will set us all to arguin' again in the society, and we thought to have peace this year."
She goes on to say that town should look to doctors and to God for a solution to the problem of the girls. The divisions within the town are immediately evident in the room, proving that Rebecca's concerns are realistic.
As she and Proctor speak against bringing in Hale to begin a literal witch hunt, Mrs. Putnam voices her anger at her bad luck and points a finger at Rebecca with vague blame even before Hale has arrived to "confirm" the presence of witchcraft. Proctor is also attacked for his church attendance and he fires back at Parris with his criticism of Parris selfishness and lack of reverence for God.
Proctor and Rebecca see that bringing a divisive figure into town can only make things worse that are already bad.