If you say, “Someone else’s disagreement does not undermine my necessary knowledge,” they will say to you, “Your disagreement with us does not undermine our necessary knowledge.”
If you say, “When someone disputes what I know necessarily, I remain silent and do not debate him,” you will be told:
“This is something that one who affirms can say to you, just as you say it to your opponent. Yet you do not abide by this. Rather, you contradict yourself, dispute with those who affirm, and condemn them. Indeed, you may even show them hostility or declare them unbelievers. If your conduct is permissible for you, then it is permissible for those deniers to dispute with you, show you hostility, and declare you an unbeliever, just as you have done to those who affirm. But if you condemn those deniers who show you hostility and declare you an unbeliever because of what you affirm, then condemn your own hostility towards those who affirm and your declaring them unbelievers because of what you deny.”
If you say, “I do not trust their truthfulness when they claim to know this necessarily, or I do not trust their understanding of necessary knowledge,” you will be told, “Your opponent who denies likewise does not trust your truthfulness or knowledge.”
If you say, “He knows enough of my religious commitment and intellect to recognize my truthfulness and knowledge,” you will be told, “You likewise know enough of the religious commitment and intellect of those who affirm to recognize their truthfulness and knowledge.”
If you say, “I demonstrate the invalidity of the rational arguments by which the deniers oppose what I affirm,” you will be told, “Those who affirm what you deny likewise demonstrate the invalidity of the rational arguments by which you oppose them.”