There are probably more that two, but initially in Act One, a sizeable faction of Parris's congregation questions his moral authority and true religiousity because of his perceived mercenary nature (as evidence, see the exchange in Act One over his salary and the argument over the deed to his house). They question his Christian nature because of his ownership of slaves (Tituba is his slave) and because he is compelled to call for outside help, in the form of other preachers, to deal with the accusations of withcraft in his community.