Balderdash. In terms of predicate calculus, neither "Israel" nor "The White Race" is a variable - they have been quantified. (In other words, they are constants.) Your argument is logically equivalent to:
Clearly fallacious reasoning.
No. You have it all wrong. OF COURSE you can argue that "neither "Israel" nor "The White Race" is a variable - they have been quantified"...
However, the point of the argument is NOT whether or not "Ethnic Jews" or "The White Race" can be mathematically quantified; the point is whether or not the following equation holds qualitatively true for either set:
Where [subset B] is segregated and elevated above the remainder of [Set A] (The non-elevated remainder of Set A being defined as [subset C]), the segregational elevation of Subset B over Subset C constitutes a segregation of Set A.
Ergo, Subset B and C are the Variables (Subset C being defined as all of Set A which is not Subset B), and it does not matter which Ethnic Group you plug into Subset B -- Jews, Whites, Blacks, whatever.
As long as Set A (Christians) are divided into "Elevated" Subset B (insert Ethnic Group here) and "Lower" Subset C (All "A"s which are not part of Subset B), the Theology in question is Racially Divisive and violates Galatians 3:28; i.e., the Theology in Question is AGAINST BIBLICAL LAW.
Best, OP