In our introduction today, we are going to discuss the historical, biblical context for Matthew 16, and all the interesting and peculiar elements within the passage, such as the keys, what do they bind and loose? Is Peter the only one with the keys?
B. H. Carroll's Notes on Ekklesia Usage in The New Testament, the Septuagint, and other literature: http://bibleinvestigator.com/b-h-carroll-ecclesia-appendix-on-usage/