Al-Ahqaf (The Dunes)

12. And before this was the Scripture of Musa (Moses) as a guide and a mercy. And this is a confirming Book in the Arabic tongue to warn those who do wrong and as glad tidings to good doers.

Revelation of the Divine Book is a Divine tradition

(“And before this was the Scripture of Musa”).

Through the glad tidings included in preceding Scriptures, the Holy Qur’an confirms them.

The antecedent of

“before this”

is the Holy Qur’an which is preceded by Torah, the Scripture of Musa which had been Divinely Revealed as the precursor of all Divine Scriptures as a Mercy demonstrating the Path of Guidance through the Books of the Torah.

This Book, namely the Qur’an, which is revealed in the eloquent Arabic tongue confirms what is included in the Torah and other Divine Books so that it may inspire awe in disbelievers as to the torments of this world and the world to come and threaten disbelievers and polytheists and bear the glad tidings of Paradise and the stations prepared for them as rewards of the good deeds to the pious and the beneficent.