"The Lamb is its lamp. The nations will walk by its light" -- Revelation 21:23-24
The next-to-the-last chapter of the Bible closes by alluding to world evangelism. That is very significant. A reference to world evangelism in Scripture’s final pages trumpets the great importance God places on reaching all people with the Gospel!
To be sure, Revelation 21:23-24 does not exhort us to finish the job. Instead, the phrase “the nations will walk by its light” celebrates the harvest being gathered around the globe.
The Bible frequently uses light and darkness to contrast good with evil. Remember, for example, Jesus’ bold proclamation: “I am the light of the world” (John 8:12)? That proclamation strengthened when John wrote in Revelation that the New Jerusalem will be totally illuminated by the Lamb of God.
Furthermore, John used his statement about the New Jerusalem’s illumination to affirm that the gospel is for everyone on earth. The Greek word in Revelation 21 that is rendered as “nation/nations” is ethnos/ethne. English words like “ethnic” and “ethnicity” come from that particular Greek word. Recognizing this, the Easy-to-Read Bible translation renders ethnos in Revelation 21:24 as "the peoples of the world." What powerful implications that has for the cause of world evangelism.
“Nations” in the sense of “ethnic groups” echoes the “every tribe and language and people” phrase used earlier in Revelation 5:9, 7:9 and 14:6. People from “the nations” walking in the Lamb’s light will wonderfully fulfill the promise God made to Abraham, Isaac and Jacob: “All peoples on earth will be blessed through you and your offspring” (Genesis 28:14 as well as 12:3 and 18:18).
World evangelism has long been described as shedding light in dark places. Thus, when Ada Blenkhorn and E. Meyer collaborated in the early 1900s to write a song about Africa’s unreached people groups, they called it “Dark Africa.” Today that title can seem derogatory or disparaging. It was not meant that way. That century-old song was written to awaken people to the lack of spiritual light for “the nations” of Africa.
In addition, we must not ignore the fact that Revelation 21:23-24 announces a fulfillment of the Isaiah 60:3 prophecy: “Nations will come to your light.” These two prophecies -- one from the Old Testament and one from the New Testament -- will be fulfilled when believers carry out the Great Commission.
Thus, though the prophecy in Revelation 21 appears descriptive, isn’t it in some ways prescriptive for us? That is, aren’t we to do more than simply rejoice that people from all over the world will be in the New Jerusalem? Revelation 21:23-24 grows out of every other biblical passage concerning our responsibility to share the Good News of the gospel with every person on earth. As we work to carry out the Great Commission, we can rejoice that the vision of Revelation 21:23-24 is headed for fulfillment.