This thinking for one’s self independently of God and His revelation is not merely an evil, but a sin. Nay, it is a sin of more than common darkness – it is so audacious, so contemptuous towards God. It places man on a level with God or at least sets Divine truth and human opinion on the same footing. It strips the former of all innate authority, while it gives to the latter an authority to which it has no claim!... There can be no authority save that which is infallible and Divine, that is, God speaking to us directly in His Word.