The first verse of chapter 10 of the Book of Revelation begins an inset into the story flow of the Book until arriving at verse 14 of chapter eleven; then the continuity resumes. The Book of Revelation is written in a time order with a few of these inset chapters, or portions of chapters, inserted at different intervals. These insets provide details and clarification on the particular subject at hand, and the reader must carefully determine where the insets apply in time order. For example, chapters 2 and 3 are historical and prophetic outlines of each of the Seven Churches from 31 AD to the present where Christ is described as "standing at the door knocking" (see Rev. 3:20). These two chapters also provide encouragements and admonishments to the Seven Churches and the Seven Angels that represent them (see Rev. 1:20). Chapters 12, 13, 17, 18 are also inset chapters.