What Danforth find strange about Parris? Why do you think Danforth finds this strange

Danforth finds it strange that Parris is praying with the prisoners........ he finds it strange because Parris has been one of their most stringent accusers.

danforth: We’ll come to that; speak nothing of Andover. Parris prays with him. That’s strange. He blows on his hands, moves toward the window, and looks out.