Theological disputes are often matters of great moment, even when those outside the dispute cannot track with what is going on. I think it was Gibbon who once displayed his ignorance by saying that the debate over homousia and homoiousia was somehow over the letter i — which is pretty similar to saying the debate between atheists and theists is over the letter a.
But at the same time, theologians are capable of talking past each other simply because they are used to different terminology, or perhaps because they are worried about the trajectory of those who use that other terminology. Take, for example, the distinction between natural revelation and natural law.
Now before opening this particular worm can, I want to acknowledge that two positions represented by these phrases can be quite different indeed. But this is a historical fact, not a logical one. I believe the two essential positions can be collapsed into one another with 5 minutes of questions.
Say you are comfortable with the phrase natural revelation. You believe that the triune God of Scripture revealed Himself through the things that have been made, and that this fact leaves all men everywhere without excuse. It sounds to me like this is an ethical obligation, and another fine word for natural ethical obligation would be natural law. Honoring God as God is not optional, and it is therefore law.
Say you are comfortable with the phrase natural law. Laws do not arrive by themselves, coming from nowhere in particular, but rather laws come from a lawgiver. And the giving of law is a form of communication, is it not? One might even say that communication reveals things — natural law is therefore a form of natural revelation.
No, no, no, someone will cry. Cornelius Van Til disagrees with John Locke and Thomas Aquinas. And I cheerfully grant it. This doesn’t mean that the hearts of the two positions are inconsistent. The God who reveals Himself through the things that have been made, and the God who embeds His law in the natural order of things, and even deeper in every human conscience, is the same God, the God of Abraham, Isaac, and Jacob, the Father of The Lord Jesus Christ.