I think they rip some pages out of their bibles and miss these.
1 John 4:1 Beloved ones, do not believe every inspired statement, but test the inspired statements to see whether they originate with God, for many false prophets have gone out into the world.
2 Thess 2: 1 However, brothers, concerning the presence of our Lord Jesus Christ and our being gathered together to him, we ask you not to be quickly shaken from your reason nor to be alarmed either by an inspired statement or by a spoken message or by a letter appearing to be from us, to the effect that the day of Jehovah is here. 3 Let no one lead you astray in any way, because it will not come unless the apostasy comes first and the man of lawlessness gets revealed, the son of destruction. 4 He stands in opposition and exalts himself above every so-called god or object of worship, so that he sits down in the temple of God, publicly showing himself to be a god.