Preface: 1 John 2:2 in Swedenborg's writings
Emanuel Swedenborg (1688–1772) does not comment directly on 1 John 2:2 anywhere in his published or unpublished theological writings.
He does quote 1 John 2:2 in one of his unpublished notebooks, traditionally titled Scripture Confirmations, which served as a specialized Bible concordance for the composition of ...
Calvinists see the "whole world" in this passage as referring to the elect throughout the world, particularly emphasizing that Christ died for Gentiles as well as Jews.
Examples of this approach abound. John Gill:
that is, not for the Jews only, for John was a Jew, and so were those he wrote unto, but for the Gentiles also (source)
You misunderstand the model. But it's a common misunderstanding. One that comes up often enough that there's a standard answer from Apologetics. Here is is in my words:
The statement that God doesn't change means that His nature doesn't change. His Nature includes many attributes that never change: Goodness, holiness, He is Just, Righteous, and ...