In paradise [Eden], supernatural revelation, that is, thought-communication on the part of God, accompanied God’s revelation in the created universe. Natural revelation therefore required supernatural revelation as its supplement even apart from the fact of sin. Even in paradise Adam had to regard all the facts of his natural environment in the light of the goal that God set for man in his supernatural revelation.
After the entrance of sin God in his grace revealed his plan of redemption for man and the universe. And it is this supernatural-redemptive revelation that we find inscripturated in the Bible. It is therefore not to depreciate natural revelation to say that it must, to be understood aright, be seen in terms of the system of truth revealed in Scripture.
And Scripture in turn cannot be seen for what it is except it be by the testimony of the Holy Spirit enabling man to see the Bible, and therewith natural revelation, in their true light.
~Cornelius Van Till~
The Defense of the Faith (Phillipsburg, NJ; P&R Publishing; 2008) p. 205.