This thesis explores the meaning of the New Jerusalem in Rev. 21-22. It is divided into four major parts. The first one is the OT background study from Ezekiel, Isaiah, Jeremiah and Zechariah. This section observes the prophetical messages of restoration, centering around the Temple/Jerusalem motif, which is one of the main concerns of the early Jewish writers and Revelation. The second one is the study of early Jewish tradition. This pmi investigates how the New Jerusalem theme develops during the second Temple period and post-70. This observation shows that some (not all) of the early Jewish tradition understands the rebuilding of the New Temple as the transference of the Heavenly Temple. For this reason, the Heavenly Temple/Jerusalem is emphasized. The third pmi is the NT background study. Here two facts demonstrated: Christ as the New Temple and the church as the New Temple. This conclusion provides a suitable foundation for developing our argument in Revelation. Finally, the fourthpart is the study of the New Jerusalem in Revelation, particularly Rev. 21-22. John uses much of the Jewish tradition in his writing. His main argument is that the church (which is symbolized by several images) is placed in heaven now (chs. 4-20) and the church (which is symbolized by the New Jerusalem) will descend to the earth from heaven (21 :2) in the future. This assumption is closely related to the early Jewish idea. However, he does not follow the current Jewish idea without any modification but he differentiates his understanding from it by christologically interpreting the OT messages. This is well shown in his following announcement: "I saw no Temple in the city, for its temple is the Lord God the Almighty and the Lamb" (21 :22).