The Qur'an! Yes! Well, for school, but yes, the Muslim scripture.
But also Exodus for Lent. I will also try and read Mark and Luke since I recently read Matthew and John, and may try and re-read Revelation. Just did an essay for class drawing heavily from Revelation. It's an amazing book, especially when you get out the end-times obsessing of Protestantism. It combines a mysterious answer to the question of the Eternal Mysteries.