The Westernized religion of Gentiles teaches them that THEY are the bride to be joined with Christ in Heaven as the body of Christ, always at the exclusion of what scripture says. They never do explain how the BODY of Christ can also be the BRIDE of Christ, considering that the bride came down from Heaven onto the new earth.
The emotional high Gentiles get by thinking they have replaced Israel, well, that maintains this element, among many, that's nothing more than just another gear in the replacement theology cult.
MM
We are joined together to become one flesh.
Ephesians 5:30-32
30 For we are members of his body, of his flesh, and of his bones.
31 For this cause shall a man leave his father and mother, and shall be joined unto his wife, and they two shall be one flesh.
32 This is a great mystery: but I speak concerning Christ and the church.