If that were truly His intent, it was not expressed specifically in that discourse and that discourse was addressed to a multitude in Jerusalem - a city where many Gentiles lived.
"If that were truly His intent, it was not expressed specifically in that discourse and that discourse was addressed to a multitude in Jerusalem - a city where many Gentiles lived."
Gentiles?
Anyway, the vast majority were Jesus' own people and it was to them He was addressing the "love thy neighbor."
That's how I interpret this expression.