all they differ in kind; that he has got into a new world of thought, and measures things and persons by a different rule. … Only one is the truth and the perfect truth; and which that is, none know but those who are in possession of it, if even they. But God knows which it is; and toward that one and only truth He is leading us forward. He is leading forward His redeemed, He is training His elect, one and all, to the one perfect knowledge and obedience of Christ; not, however, without their cooperation,