The Church is the body of Christ comprised of all genuine followers of Jesus Christ. That body is comprised of local churches, which are comprised of a regenerate membership of like-minded, genuine followers of Jesus Christ. That the Bible addresses both the general Body of Christ as well as individual congregations in the Epistles is self-evident and beyond dispute.
No, the argument I made can't be applied to any other worldly religion. They do not possess the biblical congregational/relational model that the Church possesses either corporately or individually.
The body of Christ is not composed of local churches, the body of Christ is composed of Christ's elect sheep. There are many goats within the church institution, to claim they are a part of the body of Christ simply because they are a member in good standing is a grievous error. Certainly, in many local churches can be found Christ's sheep, but the church needs the sheep, not the other way around. Do not be so heavy handed as to impose a post-reformation concept of a congregational church that has not only been impossible to maintain throughout most of history, but in most places in the world at this moment cannot be maintained due to persecution. Or are those dear believers who could not then, and cannot now, gather into organized churches second class citizens, outside the means of grace? Absolutely not. The body of Christ is people, not churches.
I'm still interested to see you prove from Scripture your assertion that "local church" supersedes the individual child of Christ.