Final answer:
The Biblical allusion to Moses parting the Red Sea suggests that Abigail has the ability to control and manipulate the people around her in the trials.
Step-by-step explanation:
The Biblical allusion to Moses parting the Red Sea in the book of Exodus is used to describe Abigail's role in the trials in Act II. The phrase 'where she walks, the crowd will part like the sea for Isreal' suggests that Abigail holds a position of power and influence, just like Moses did in the Bible story. It implies that Abigail has the ability to control and manipulate the people around her, just as Moses controlled the waters of the Red Sea.