Revelation 3 contains John’s letters to Sardis, Philadelphia, and Laodicea. John uses the Old Testament in a number of places in these letters. Some have been discussed in earlier episodes of this series on the use of the Old Testament in the book of Revelation. Our discussion in this episode, Part 1 of Revelation 3, focuses on phrases not yet discussed (e.g., “they will walk with me in white” … “white garments” … the “Book of Life” … “hour of trial”). Part 2 will be a concentrated look at save for Rev 3:7’s reference to the “key of David” in conjunction with Rev 1:18, the “keys of Death and Hades.”