Final Answer:
Soren was carrying a collection of rare and ancient manuscripts in the big black bag.
Step-by-step explanation:
In the narrative, the big black bag that Soren carries contains a trove of valuable and irreplaceable manuscripts. These manuscripts are not only rare but also possess historical and cultural significance.
The bag symbolizes the weight of knowledge and the responsibility that Soren, as the custodian of these manuscripts, carries. The narrative doesn't delve into the specific titles or subjects of the manuscripts, leaving the contents open to interpretation. The portrayal of the manuscripts as ancient and rare suggests that they hold immense scholarly and cultural value.
Soren's role as the bearer of this bag becomes a symbol of preserving and safeguarding the richness of human history and knowledge. The ambiguity surrounding the manuscripts adds an air of mystery to the narrative, leaving the readers to imagine the breadth and depth of the intellectual treasures held within the big black bag.