Would it not be most helpful if you post the scripture you are referring to and explain how scripture defines it...?
Right.. so 1 Corinthians 12
(1Co 12:12) For as the body is one, and hath many members, and all the members of that one body, being many, are one body: so also is Christ.
(1Co 12:13) For by one Spirit are we all baptized into one body, whether we be Jews or Gentiles, whether we be bond or free; and have been all made to drink into one Spirit.
(1Co 12:14) For the body is not one member, but many.
(1Co 12:15) If the foot shall say, Because I am not the hand, I am not of the body; is it therefore not of the body?
(1Co 12:16) And if the ear shall say, Because I am not the eye, I am not of the body; is it therefore not of the body?
(1Co 12:17) If the whole body were an eye, where were the hearing? If the whole were hearing, where were the smelling?
(1Co 12:18) But now hath God set the members every one of them in the body, as it hath pleased him.
(1Co 12:19) And if they were all one member, where were the body?
(1Co 12:20) But now are they many members, yet but one body.
(1Co 12:21) And the eye cannot say unto the hand, I have no need of thee: nor again the head to the feet, I have no need of you.
(1Co 12:22) Nay, much more those members of the body, which seem to be more feeble, are necessary:
(1Co 12:23) And those members of the body, which we think to be less honourable, upon these we bestow more abundant honour; and our uncomely parts have more abundant comeliness.
(1Co 12:24) For our comely parts have no need: but God hath tempered the body together, having given more abundant honour to that part which lacked:
(1Co 12:25) That there should be no schism in the body; but that the members should have the same care one for another.
(1Co 12:26) And whether one member suffer, all the members suffer with it; or one member be honoured, all the members rejoice with it.
(1Co 12:27) Now ye are the body of Christ, and members in particular.
First off.. the church at Corinth is this body being described. In vs 27-- so that's local and visible
Second.. members of this body are individuals that are saved and baptised.. all of them were baptised into this body-- see vs 13
Thirdly.. vs 19-25.. this is describing the function of a local body, not every believer scattered everywhere. It makes no sense to apply it to any other entity.. other than another local body.
Next-- 1Ti_3:15 But if I tarry long, that thou mayest know how thou oughtest to behave thyself in the house of God, which is the church of the living God, the pillar and ground of the truth.
This is describing the local body. Not every believer.
Gal_1:13 For ye have heard of my conversation in time past in the Jews' religion, how that beyond measure I persecuted the church of God, and wasted it:
This is talking about the church at Jerusalem by context.. that Paul persecuted before he was converted. Not every believer.
I could go on.
The entity of every believer isn't the body of Christ.. that is the Family of God.. they are not the same thing. But anyways.. I am repeating and not really reasoning at this stage. So I'll take a different tack after this post.