The biblical allusion given in the play is: “Abigail brings the other girls into the court, and where she walks the crowd will part like the sea for Israel.” The explanation of the allusion is that Moses was the leader of the Jews and God commanded him to part the Red Sea for the Jews so they could run to Canaan and escape from the Egyptians.
In the play, Abigail has gained a great deal of power. As the person leading the group of girls in each “crying out,” she has gone from a Puritan serving girl, given little or no respect, to one of the most feared people in the community. If Abigail does not like someone, that person can expect that he or she will eventually end up in jail, then court, then dead. Therefore, the best course of action is not to be anywhere near her. This explains the use of this particular allusion. One can easily imagine a group of Puritans, going about their daily business. Seeing Abigail coming, people on both sides of the group would move away so as not to draw her attention, “parting like the sea for Israel.”