Question: "What does it mean that the church is the bride of Christ?"
Answer: The imagery and symbolism of marriage is applied to Christ and the body of believers known as the church. These are those who have trusted in Jesus Christ as their personal savior and have received eternal life. In the New Testament, Christ, the Bridegroom, has sacrificially and lovingly chosen the church to be His bride (Ephesians 5:25-27). Just as there was a betrothal period in biblical times during which the bride and groom were separated until the wedding, so is the bride of Christ separate from her Bridegroom during the church age. Her responsibility during the betrothal period is to be faithful to Him (2 Corinthians 11:2; Ephesians 5:24). At the Second Coming of Christ, the church will be united with the Bridegroom, the official "wedding ceremony" will take place and, with it, the eternal union of Christ and His bride will be actualized (Revelation 19:7-9; 21:1-2).
At that time, all believers will inhabit the heavenly city known as New Jerusalem, also called “the holy city” in Revelation 21:2 and 10. The New Jerusalem is not the church, but it takes on the church’s characteristics. In his vision of the end of the age, the Apostle John sees the city coming down from heaven adorned “as a bride,” meaning that the inhabitants of the city, the redeemed of the Lord, will be holy and pure, wearing white garments of holiness and righteousness. Some have misinterpreted verse 9 to mean the holy city is the bride of Christ, but that cannot be because Christ died for His people, not for a city. The city is called the bride because it encompasses all who are the bride, just as all the students of a school are sometimes called “the school.”
As believers in Jesus Christ, we who are the bride of Christ wait with great anticipation for the day when we will be united with our Bridegroom. Until then, we remain faithful to Him and say with all the redeemed of the Lord, “Come, Lord Jesus!” (Revelation 22:20).