Why logical arguments for Messengers don't work.

[Chas]

If God existed and wanted to tell the world something, you would think he would do it directly.

And he did so all through the Old Testament.

Mysteriously, he stopped. Then he supposedly talked to 'special people' to relay his messages.

If anyone claims to be one of these messengers these days, he or she is considered to be mentally ill. So the question is, how is one to tell the difference between a 'legitimate' messenger of god, and a mentally ill person having delusions?

Easy-peasy. There are no messengers from any gods.