This document provides an overview of lesson 2 from a study of the Book of Revelation. It discusses how Revelation contains hundreds of allusions to the Old Testament without direct quotes. Key images and events from Revelation such as the lampstands, the Son of Man, God's throne, the four living creatures, and seals being opened are shown to relate to similar passages in the Old Testament prophets. The judgments depicted by the seals, trumpets and other events borrow imagery from Old Testament prophesies of God's judgments.