[Dr. Eckleburg]

That's better.

Even the Christian cannot separate himself from the love of God.

I'm assuming here we agree the meaning of "Christian" implies "Trinitarian Christian." The term seems to be tossed around somewhat carelessly these days.

But I'm not sure why the word "even" is in the sentence. I'd substitute "only" for "even." "Only the Christian cannot separate himself from the love of God." Thus "eternal security" for the sheep.

The reprobate are and will always be "separated from the love of God."

Or else they would be Trinitarian Christians (or believing Jews, whom I don't consider as reprobate.)

[fortheDeclaration]

A Christian is someone who is saved and brought into union with Christ. (1Cor.12)

In the church age, a believing Jew is no longer a Jew but a Christian (Gal.3:28), as is a believing Gentile.

Ofcourse, the passage is only referring to those that are saved, i.e. Christians.

The unbeliever is separated from God (Eph.2) and if he does not believe the wrath of God comes upon him (Jn.3:36)