Approach: Using question and answer as a means to teach a lot of material.

Hermeneutic objective: Learning how to work out inconsistencies in one's systematic understanding of a subject.

Theological objective: Unfallen angels are angels who have not sinned and there are different classes of good angels such as cherubim and seraphim. They serve God with praise and worship, act as God's messengers and answers to prayer including rescue from danger. But for non-Believers, they subdue evil and carry out God's judgment.