Beloved, do not believe every spirit, but test the spirits,
whether they are of God;
because many false prophets have gone out into the world.
(1Jn 4:1)
But there were also false prophets among the people,
even as there will be false teachers among you,
who will secretly bring in destructive heresies,
even denying the Lord who bought them,
and bring on themselves swift destruction.
And many will follow their destructive ways,
because of whom the way of truth will be blasphemed.
(2Pt 2,1-2)
You therefore, beloved,
since you know this beforehand,
beware lest you fall from your steadfastness,
being led away with the error of the wicked;
but grow in the grace and knowledge of our Lord and Savior Jesus Christ.
To Him be the glory both now and forever. Amen.
(2Pt 3,17-18)