Eternal security: only for believers

Some days ago, I joined a Facebook group dedicated to the defense of eternal security: once saved always saved, regardless what a person does.

In such a group, I would expect a similar security for my membership. But no.

Today, after mentioning that

1. ​"believe" is a verb, something a person does, and  
2. eternal security only applies to believers,

I had some follow up discussion with an admin, after which I was denounced as a troll and booted.

It follows that the group dedicated to the defense of eternal security doesn't practice what it preaches. For the membership security applies only to the members that believe as required in the group. Not to me.

Irony.