This document provides commentary on Revelation 3:7-13 from multiple scholars and sources. It includes:
1. Explanations of the significance of Jesus being called "holy and true" and having "the key of David," with the key representing his authority over the kingdom of God.
2. Historical background on the city of Philadelphia in what is now Turkey, founded in the 2nd century BC to spread Greek culture.
3. Analyses of different aspects of Christ's character based on his descriptions in the passage and their relevance to the church in Philadelphia and the period it represents.
4. Discussions of references to David as a type of Christ and the implications of Christ having the key