• 1 Kings 13:18 :: anonymous prophet who countered Jeroboam is tricked by another anonymous, deceitful prophet
• Acts 17:11 :: Luke commends people who verify his scriptural interpretation
• 1 John 4:1 :: John tells people to test the spirits
• 2 John 1:7–9 :: ultimate trustable spirit is knowing Christ has come in the flesh and all of teachings He gave