An idea for making a Bible quiz fun is to divide the students into teams and structure the quiz in the form of a of a game that awards points for answering questions correctly. The game can use any format that ensures all students have a chance to participate.
Another idea is to divide the students into teams and assign questions that require them to consider several lessons covering a variety of topics and provide answers containing more than one or two words. This technique encourages greater participation among the students and forces them to draw from their entire body of knowledge rather than one individual or event.
An alternative is to have the students develop the quiz themselves. Given an assortment of topics, they can develop games or quizzes for each other. This approach requires them to learn facts about each topic to complete the assignment.