Deuteronomy 18:21
And when thou shalt say in thy heart, How shall we know the word which Jehovah spake not?
1 Thessalonians 5:24
Faithful he calling you, who also will do.
1 John 4:1-3
Dearly beloved, believe not every spirit, but try the spirits if they are of God: for many false prophets have come out into the world.
Revelation 2:2
I know thy works, and thy fatigue, and thy patience, and that thou canst not bear the wicked: and thou bast tried them saying they are sent, and are not, and thou Last found them liars:
Treasury of Scripture Knowledge
Summary
                            And if thou say in thine heart, How shall we know the word which the LORD hath not spoken?                        
                    General references
Bible References
General references
                                        1 Thessalonians 5:24                                        
                                                                                                                                Faithful he calling you, who also will do.
                                    
                                        1 John 4:1                                        
                                                                                                                                Dearly beloved, believe not every spirit, but try the spirits if they are of God: for many false prophets have come out into the world.
                                    
                                        Revelation 2:2                                        
                                                            
                        I know thy works, and thy fatigue, and thy patience, and that thou canst not bear the wicked: and thou bast tried them saying they are sent, and are not, and thou Last found them liars: