The specific comparison of recognizing Muhammad (or the revelation) as clearly as one's own son appears in two places in the Quran. These verses are the foundation for the "Obvious Son Dilemma" because they explicitly claim that Christians and Jews possess a biological level of certainty regarding Islamic claims.
Surah 2:146:
Those to whom We gave the Scripture recognize him as they recognize their own sons...Surah 6:20:
Those to whom We have given the Scripture recognize it as they recognize their own sons..
If a text is a divine revelation, its descriptions of the cognitive state and recognition-capabilities of external witnesses must be factually accurate and universally observable.
Supporting Evidence:
Surah 4:82 (The test of consistency/contradiction). Allah has
Surah 4:82:
"Then do they not reflect upon the Qur'an? If it had been from other than Allah, they would have found within it much contradiction."
The Quran explicitly defines the quality of the People of the Book's recognition of Muhammad as being equal to the recognition of their own sons—an identification that is by definition instantaneous, intuitive, and non-propositional.
Supporting Evidence:
Surah 2:146 and Surah, 6:20 ("...recognize him as they recognize their own sons"). The fact that the Quran repeats the claim suggests that it is doubly important!
The Quran directs the seeker to the existing Biblical text of the 7th century as a valid reference point to verify these claims, implying the "Son-grade" evidence was accessible and functional at that time.
Supporting Evidence:
Surah 10:94:
"...ask those who have been reading the Scripture before you".Surah 7:157:
Claiming he is "found written" in the Torah and Gospel.
This identification of Muhammad in the Bible is not "intuitive" as recognising your offspring; it is "Cipher-grade" impossible!
The historical fact that billions of Jews and Christians have read these texts for centuries without a singular instance of "accidental" or "intuitive" recognition of Muhammad. He is NOT there.
While an individual can lie about recognizing their son, the Quranic analogy describes the capacity to recognize.
If the evidence requires a Muslim apologist to "uncover" it through complex arguments, it fails the "Son-grade" criteria, regardless of whether the reader is honest or "concealing" the truth.
Therefore, since the recognition of Muhammad in the Bible is demonstrably non-intuitive and complex, the Quran’s empirical claim regarding "Son-grade" recognition is factually FALSE.
This constitutes an internal contradiction between the Quranic claim and reality, disqualifying it as the Word of the God who authored the Bible.
Summary of the Logic Flow: