[American Constitutionalist]

" I have seen those who are convinced they are His and yet fallen prey to false religions of deception. "

It's one thing to imagine and to think that you are his own, and one of his, it's a totally different thing to " KNOW " that you are his, and to have confirmation to back it up.
Those who imagine and think that they are his, and or his own, will one day stand before the LORD and will say to the LORD, LORD ? did we not preach the Gospel for you ? did we not prophesy in your name ? heal the sick, heal the blind, do all these good deeds in your name ? ( remember when Jesus talked about the tares among the wheat ? ) ....
Then, the LORD will say to those, I never knew you !

[caww]

Then, the LORD will say to those, I never knew you!

That is what's so frightening when ministering to those folks. They do believe they "KNOW" Him....and that these so called spiritual experiences confirm such...when in fact they are believing a lie....a masquarade and counterfeit experiences, which to them are very real...and they 'believe' they are real. Therefore you are battling a "belief" just the same...even though it's not reality.