1) Either faith can be used in an argument, or it can't 2) If it cannot, then it cannot. 3) If it can, then I have faith that it cannot. 4) 3

1) Either faith can be used in an argument, or it can't 2) If it cannot, then it cannot. 3) If it can, then I have faith that it cannot. 4) 3 contradicts itself so we are left with its alternative 2.