Reference

1 Corinthians 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.
19

And if they were all one member, where were the body?

20

But now are they many members, yet but one body.

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.

22

Nay, much more those members of the body, which seem to be more feeble, are necessary:

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.

Counter-Arguments

The strongest case that this verse does not belong in this theme.

One People of God

The verse uses the analogy of body parts to describe interdependence within a single entity, but it does not specify the identity of this entity as "believing Jews and Gentiles" or address the concept of erasing or replacing Israel.