It is important that each student have an opportunity to participate. Even if a student is very uncomfortable speaking out loud, opportunities can be given for thinking and writing things down. Even if the student chooses not to share, he or she will have engaged in the process of thinking and applying.
In this lesson the students might be asked to write down sinful actions in everyday life to which it is easy for one’s conscience to become immune (e.g., cheating on tests, speaking disrespectfully to parents, etc.), and then fold their papers. Read the papers from the front and let students comment from their perspective. Even if a shy student does not say anything, their input has contributed to the overall discussion.