The specified phrase refers to a particular segment within a Bible Study Fellowship (BSF) curriculum. Specifically, it identifies the second day of study within the twenty-first lesson focused on the Book of Revelation. This segment likely involves assigned readings, questions for reflection, and discussion points centered on a specific passage or theme from Revelation.
The structured approach of this format provides individuals with a systematic way to engage with a complex biblical text. The benefits of participating in this type of study include deepened understanding of scripture, fostered community through group discussion, and facilitated personal application of biblical principles. Historically, BSF has played a significant role in providing in-depth Bible study resources to a global audience.