Final answer:
The biblical book that is the source for the festival of Purim is the Book of Esther. The festival is celebrated on the 14th and 15th of the Hebrew month of Adar and includes reading the Book of Esther, giving gifts to the poor, exchanging gifts with friends, and having a festive meal.
Step-by-step explanation:
The biblical book that is the source for the festival of Purim is the Book of Esther.
Purim is a Jewish holiday that celebrates the deliverance of the Jewish people from a plot to exterminate them in the ancient Persian Empire. The story of Purim is recounted in the Book of Esther, which is part of the Hebrew Bible or the Old Testament.
According to the Book of Esther, the festival of Purim is celebrated on the 14th and 15th of the Hebrew month of Adar and includes reading the Book of Esther, giving gifts to the poor, exchanging gifts with friends, and having a festive meal.