Deuteronomy 18:21
If you say in your heart, ‘How will we know and recognize the word which the Lord has not spoken?’
1 Thessalonians 5:24
Faithful and absolutely trustworthy is He who is calling you [to Himself for your salvation], and He will do it [He will fulfill His call by making you holy, guarding you, watching over you, and protecting you as His own].
1 John 4:1-3
Beloved, do not believe every spirit [speaking through a self-proclaimed prophet]; instead test the spirits to see whether they are from God, because many false prophets and teachers have gone out into the world.
Revelation 2:2