I believe that Scripture and test criteria will become a life and death issue increasingly as the END TIMES race on--even an eternal life/death issue.
Scripture is clear that the END TIMES GREAT DECEPTION will be sooooooo GREAT, THAT WERE IT POSSIBLE it would deceive the VERY ELECT OF GOD.
I think it is all toooo human, and particularly American to smugly say to ourselves that I WON'T BE DECEIVED because I'm so brilliant and informed.
TRUSTING IN THE FLESH in that way is a catestrophic danger.
We MUST walk so close to God; become so familiar with HIS VOICE TO US . . . that we KNOW BECAUSE WE KNOW BECAUSE WE KNOW BECAUSE WE KNOW the Voice of our Shepherd and will follow NO other.
And, when the situation calls for it, we must be ready and quick to challenge any pretender with what they believe about Jesus The Christ per the above Scripture you so faithfully cited, Dear Sister. THANKS THANKS.
IF AN ANGEL FROM HEAVEN COME, PREACHING ANY OTHER GOSPEL, LET HIM BE ACCURSED.