VIII. It is indeed true, that those who enjoy the instruction of the Gospel, do put off a considerable share of that soul rust which obscures the mental faculty, and are endued with founder thoughts; but yet no external proposition of divine truths, however clear and distinct, is altogether sufficient to take away this corruption and blindness of mind; to Peter, who had been already conversant for some time in the school of Christ, it was said, “Thou savourest not the things that be of God;” and