Final answer:
The principle based on the understanding that divine truths are revealed through both the sacred scriptures and the physical universe is known as the Argument from Revelation. However, it is often critiqued for its circular reasoning, which posits that one must believe in the divine origin of the scriptures to accept them as true and thereby affirm the existence of God.
Step-by-step explanation:
The principle you are asking about is known as the Argument from Revelation. This principle is founded on the belief that God has made truths known to humanity through two primary media: the 'book of God's Word'—which is represented by sacred texts such as the Bible, Qur'an, and Vedas—and the 'book of God's Work'—which is the observable universe or Creation. According to this line of thinking, the scriptures are seen as divinely inspired, and therefore, hold true because they come from or are mediated by God.
The Argument from Revelation is often scrutinized because of the inherent circular reasoning. To accept the scriptures as truthful, one must already believe that they are inspired by God. This prerequisite belief in the divine inspiration of these texts leads to accepting the existence of God, which is the contention that the scriptures attempt to establish in the first place. Hence, without pre-existing faith in a deity, the argument is unlikely to convince a skeptic.
It is essential to differentiate between using the scriptures as evidence of divine truth versus circular reasoning. While many find personal and spiritual truths within religious texts and Creation, evidence that can be universally accepted to demonstrate the existence of God remains a matter of personal faith and belief.