Bride

Concise Bible Dictionary:

A woman about to be married, or newly married, used symbolically for those who are closely associated with Jehovah or the Lord Jesus. Though the word does not occur in the Canticles, nearly the whole of that book is composed of discourses between a bridegroom and a bride-doubtless referring to Jehovah and the Jewish remnant (compare Hos. 2:19-2019And I will betroth thee unto me for ever; yea, I will betroth thee unto me in righteousness, and in judgment, and in lovingkindness, and in mercies. 20I will even betroth thee unto me in faithfulness: and thou shalt know the Lord. (Hosea 2:19‑20)). As a bride adorns herself with jewels (Isa. 61:1010I will greatly rejoice in the Lord, my soul shall be joyful in my God; for he hath clothed me with the garments of salvation, he hath covered me with the robe of righteousness, as a bridegroom decketh himself with ornaments, and as a bride adorneth herself with her jewels. (Isaiah 61:10)), so would Jerusalem be adorned with Jehovah’s righteousness and salvation. When John is called to behold the bride, the Lamb’s wife, he sees a beautiful city, the holy Jerusalem, having the glory of God (Rev. 21:2, 9-102And I John saw the holy city, new Jerusalem, coming down from God out of heaven, prepared as a bride adorned for her husband. (Revelation 21:2)
9And there came unto me one of the seven angels which had the seven vials full of the seven last plagues, and talked with me, saying, Come hither, I will show thee the bride, the Lamb's wife. 10And he carried me away in the spirit to a great and high mountain, and showed me that great city, the holy Jerusalem, descending out of heaven from God, (Revelation 21:9‑10)
). The church is the bride of the Lamb (compare 2 Cor. 11:22For I am jealous over you with godly jealousy: for I have espoused you to one husband, that I may present you as a chaste virgin to Christ. (2 Corinthians 11:2)).