[CynicalBear]

>>But I thought once you were saved, you couldn't be lost?<<

The letters were addressed to the assemblies, not the individuals in those assemblies. An assembly can start out pure but over time and with new leadership leave what it originally taught. We can see that happening in "churches" today. Even in the Catholic Church there are those who believe that after Vatican 2 it has changed. Read the letters again.

[Mrs. Don-o]

Well now, this is perplexing. The seven assemblies in Asia -- the ekklesia of Christ --- are in fact only individuals with no institutional characteristics, no offices, no clergy, no teachers (because the need no teachers, they are all taught by the indwelling Holy Spirit), nobody usurping the responsibility of the individual ---yet these assemblies could go so seriously wrong they are in danger of being lost altogether--- AND YET none of the individuals are in danger of being lost, because they have the "eternal security" of having been saved?

Some of these Seven Ekklesiae of Asia were in apostasy. How can an "ekklesia" go apostate, when it is not an institution at all, but an assembly of individual spirit-indwelt members, who are individually and securely saved by grace and by faith, no matter what they do??

(Or am I getting your beliefs mixed up with those of the Calvinists?)