Deuteronomy 18:21
Now you may ask yourselves, "How will we be able to discern that the LORD has not spoken?'
1 Thessalonians 5:24
The one who calls you is faithful, and he will continue to be faithful.
1 John 4:1-3
Dear friends, stop believing every spirit. Instead, test the spirits to see whether they are from God, because many false prophets have gone out into the world.
Revelation 2:2
"I know what you've been doing, your toil, and your endurance. I also know that you cannot tolerate evil people. You have tested those who call themselves apostles, but are not, and have found them to be false.