How to quickly identify false cults/teachers/teaching . . . and so, run.......
They do not teach that Jesus is God in the flesh. If they reject that Jesus is God then they don't have the truth and you should get away from them.
Along with this, they will deny that the Son was pre-existing before creation. He is not a created being. He is God, the I AM, the alpha and omega.
Also, another thing false teachers will do . . . is focus on a minor issue . . . "adiaphora" . . . and elevate it to a major salvation issue. For instance, those who insist that King James is the ONLY translation God authorizes. Or, not eating meat. Or that if you participate in cultural, "pagan" holidays like Easter or Christmas . . . you are damned. Or, that you have to call Jesus by the name "Yeshua" . . . . . or one's view on the rapture . . . . . things like that which are actually NON-salvation issues, which you believe. The cult or false teacher will take one or more of these and insist they you must believe a certain way or you are not saved. . . .
The main one though, is how they view Jesus. It all boils down to this. Is He God, the Messiah, who died and raised Himself on the third day? Or was He an archangel . . . or just a "mode" of God . . . or just a "great moral teacher" or whatever. THAT is the test.
And to discern the truth of this matter, you must have spiritual eyes. It is discerned spiritual by the Holy Spirit, Who is also God. And this is a gift from God, not something that YOU have the ability to do in and of your self. . . .