Answers
How do I spot a false teacher?
Test the message against Scripture yourself, the way the Bereans did, and watch four things the Bible watches: money, sex, power, and whether they can be questioned. A teacher who makes God's blessing conditional on a payment, who cannot show accounts, who cannot be corrected by anyone, or whose private life is protected by an inner circle, is described in the New Testament in very plain language. Fruit, over time, is the test Jesus gave.
Go and see for yourself
These were more noble than those in Thessalonica, in that they received the word with all readiness of mind, and searched the scriptures daily, whether those things were so.
Acts 17:11
Ye shall know them by their fruits. Do men gather grapes of thorns, or figs of thistles?
Matthew 7:16
And through covetousness shall they with feigned words make merchandise of you: whose judgment now of a long time lingereth not, and their damnation slumbereth not.
2 Peter 2:3