This text is an extensive examination that starts off by explaining what revelations mean, how they happened at the time of the Prophet sawaws and how they happened at the time of the Jewish and the Christian.
The book continues by describing the authenticity of the Old and New Testaments and talks about the Injil, Jesus's (as) book.
After the study of the previous revealed book we can dive in the explanation on the authenticity of the Holy Qur'an, how to interpret the verses, what ahadith are and how to prove their authenticity. The book also provides lots of examples and is a wonderfully way to learn about our holy book and the ahadith.