David Platt’s foreword to Nik Ripken’s The Insanity of God:
The Great Commission will one day be complete. One day, disciples will have been made and churches will have been multiplied in every nation and among every people group on the planet. Thousands of these people groups remain unreached today, but one day (hopefully soon), they will be reached. In the words of Jesus, “This gospel of the kingdom will be proclaimed throughout the whole world as a testimony to all nations” (Matt. 24:14).
According to the apostle John, one day “a great multitude that no one [can] number, from every nation, from all tribes and peoples and languages” will stand “before the throne and before the Lamb, clothed in white robes, with palm branches in their hands… crying out in a loud voice, “Salvation belongs to our God who sits on the throne, and to the Lamb!” (Rev. 7:9-10). These words from Jesus and John in Scripture are guarantees. By the power of His Spirit through the testimony of His church, Christ will be proclaimed as Savior among all peoples of the world.