Can we apply these criteria to the Quran, the Gospels, and the Torah equally?

Yes, the six-criteria methodology can be applied to all three sacred texts, but with important differences in results and challenges. This question is pivotal because it tests whether the methodology is fair and scientific, or whether it is tailored to serve a particular text. The brief answer: the methodology is applicable to all, but each text has its characteristics that affect how the application proceeds and what results emerge.

Insufficient Responses to Avoid

From some Muslims:

"The six criteria prove only the Quran's truthfulness, while the other books are corrupted." This is a prejudgment that corrupts the methodology. If we already know the result beforehand, why do we need a method at all? Scientific methodology means applying standards fairly, then seeing the results, not starting with the conclusion and justifying it.

"The Quran cannot be compared to other books because it is the direct word of God." This is a respectable faith position, but it doesn't answer the methodological question. Even if the Quran is God's word, it claims this about itself, and other books claim various forms of revelation. The methodology aims to examine these claims, not ignore them.

From some non-Muslims:

"All sacred books are equal, and the criteria won't show any difference." This oversimplifies reality. Sacred texts differ in their history, methods of compilation, claims, and preservation. Ignoring these differences isn't "neutrality" but blindness to evidence.

"The methodology is designed to favor Islam." An accusation that requires proof. The six criteria (internal coherence, external support, explanatory power, etc.) are standards used in historical and literary criticism generally. If results lean toward a particular text, this might be due to the text's own characteristics, not methodological bias.

Why These Responses Are Insufficient

They share a refusal to actually apply the methodology. The only way to know if the methodology is fair is to actually apply it, with scientific integrity, to different texts, then compare the results.

How the Criteria Apply to Each Text

First, the Quran:
- Internal coherence: Claims to be from one source (God), free from contradiction. Studies show remarkable consistency despite being revealed intermittently over 23 years.
- External support: Ancient manuscripts (Birmingham, Sanaa) support the current text. Prophetic biography (sīra) and hadith provide historical context.
- Explanatory power: Offers comprehensive explanation for existence, ethics, and purpose.
- Simplicity: The central message of monotheism (tawḥīd) is simple and clear.
- Fruitfulness: Produced civilization, jurisprudence, philosophy, and sciences over centuries.
- Convergence with other theories: Engages with the Abrahamic tradition and presents itself as its culmination.

Second, the Gospels (New Testament):
- Internal coherence: Four gospels with different accounts of Jesus's life. There are differences in details, but agreement on the central message.
- External support: Many Greek manuscripts from the second and third centuries. External testimonies (Josephus, Tacitus) support Jesus's existence and the early Christian movement.
- Explanatory power: Offers a vision of salvation and eternal life.
- Simplicity: The message of love and redemption is clear, but the theology (Trinity) is complex.
- Fruitfulness: Produced the world's largest religion, with enormous civilizational impact.
- Convergence: Builds on the Old Testament and presents itself as its fulfillment.

Third, the Torah (Old Testament):
- Internal coherence: Collection of diverse texts over centuries. There's diversity in styles and themes, with a unifying thread (the covenant between God and Israel).
- External support: Dead Sea Scrolls (Qumran) date to the second century BCE. Some events have archaeological support (Babylonian exile, for example).
- Explanatory power: Provides sacred history and moral law.
- Simplicity: Monotheism is clear, but detailed law (sharīʿa) is complex.
- Fruitfulness: Foundation of the three Abrahamic religions.
- Convergence: Interacts with ancient Near Eastern cultures.

Challenges Specific to Each Text

The Quran faces the challenge of being in one language (Arabic), limiting direct access. The Gospels face the challenge of multiple authors and accounts. The Torah faces the challenge of the long temporal gap between narrated events and the oldest manuscripts.

Application Results: What Do We Find?

With fair application, we find:
- All three texts score strong points in some criteria.
- The Quran stands out in internal coherence and textual preservation.
- The Gospels stand out in civilizational impact and spread.
- The Torah stands out in historical depth and founding the Abrahamic tradition.

No text "fails" completely, and no text "succeeds" in everything. The results reflect each text's characteristics and history.

Methodological Conclusion

Yes, the six criteria can be applied to all three texts. Application reveals strengths and challenges in each text. The methodology doesn't give simple "grades" but provides multi-dimensional analysis. This allows each person to weigh the evidence according to their priorities.

What matters is integrity in application. If we apply the methodology with prior bias, we'll get biased results. But if we apply it fairly, it will help us better understand each text, its strengths and challenges.

For Advanced Reading

- Intermediate level: Applying the "external support" criterion to historical events in the three texts
- Advanced level: The problem of "multiple standards" in comparing sacred texts
- Bart Ehrman on the history of New Testament texts
- מחקרי מקרא (Contemporary Biblical Studies) and their impact on understanding the text