" If we can agree that the sky is blue, for example, how is it that such agreement is possible? If the world is a world of chance, how could anybody agree on anything? Agreement presupposes a world made by God, designed to be orderly and designed to be known by rational minds. You can see that this kind of argument is presuppositional. It’s appealing to the true knowledge of God that the unbeliever has but suppresses (Rom. 1)—a knowledge that he has in common with the believer. To argue this way is very different from saying, “Let’s assume that the Bible can be false, and let’s judge its truth on the higher authority of our senses and logic.” Now "

― John M. Frame , Apologetics: A Justification of Christian Belief