Why do religious people believe the author of the scripts or books but then instantly disbeleive when somebody of modern times claims to be Gods messenger ?
The Quran says when he replaces one sign/proof/guidance with another, he brings up the same level or better. Never is it less. And to me this is reasonable, that God only augments proof light and guidance.
From what I understand of Quran and Ahlulbayt (a), there is no comparing that guidance, with what new claiming Messengers/Prophets bring.
One Ahlulbayt is to be replaced by another, and to me, the holy books claimed by fake Prophets don't compare to the Quran nor do they tend to bring an Ahlulbayt and Twelve luminaries representing the founder. This Quran has shown has been the case in all times, and so newly claiming Prophets for example the Bab and Baha'allah, couldn't convince their offspring to go with the lie. And so they have no chosen offspring and this one of the signs that a Prophet is fake per Quran as it's a sign that aside from the (spiritual) brother of the founder, there is always an offspring, so bring 10 structures like Hassan to al-Hassan if they are truthful and wish to forge a structure like what God has revealed of his light and reminder. And let them bring a saying like the Quran. They cannot.
Bahaism for example epically fails to mimic and the sons and offspring of Baha'allah all turned back to Islam. They could not bring the Twelve Successors mimic, and so it fails by their own criteria of twelve Imams in Quran and Sunnah.
Either the lie goes on and on and exceeds Twelve Successors or the lie falls short and doesn't reach that number. This is God's words "let them bring ten structures like it (the reminder) forging them if they are truthful", and the Surah talks about offspring of Ibrahim and Sarah, and the good news of Isaac and Yaqoub in the past and that blessed Ahlulbayt in the past. Here the 10 is because it's referring to the living reminders and particularly means Hassan to Al-Hassan...and it says say you make the last one disappear and go to ghayba to complete the number twelve and say you have a "brother" with you, can you bring offspring one after another inheriting the leadership. Surely, you cannot. You will either exceed or fall short. Everywhere the Quran is referred it means bring one chapter like it or saying like it, but here it says to bring 10 because it has to do with the topic of an Ahlulbayt and chosen offspring as the Surah emphasizes on.
And their scriptures are no where in comparison to the Quran. No where.
There is no comparison at all. The Quran is of an exalted high nature and has many features proving it from God.
This is God's words:
"By the name of God, the Compassionate, the Compassionate, indeed we gave you the Abundance. So connect to your Lord and sacrifice. For indeed it's your enemy will be cut off."
A fake Prophet will be cut off one point if he tries to forge and mimic the concept of a reminder with a divine family. His offspring will not continue on the lie and end on twelve Successors or if they all in on the lie, they will keep going beyond twelve.
In this way it's his enemies who forge lies that are cut off, while, Allah (swt) through Fatima (a) has connected his successors to him and he is not without offspring connected to him in guidance.
The Surah was revealed when people mocked him for not having a son saying to tolerate him for soon he will be cut off without offspring that continue in what they accused of his lie and false divine authority.