1 John 2:19
19 eThey went out from us, but they were not of us; for fif they had been of us, they would have continued with us. But they went out, gthat it might become plain that they all are not of us.
Deuteronomy 13:3
3 you shall not listen to the words of that prophet or that dreamer of dreams. For the Lord your God sis testing you, to know whether you love the Lord your God with all your heart and with all your soul.