Micah 7:5
"Trust ye not in a friend, put ye not confidence in a guide: keep the doors of thy mouth from her that lieth in thy bosom."
Cross References (ranked by relevance)
Jeremiah 9:4
28
Take ye heed every one of his neighbour, and trust ye not in any brother: for every brother will utterly supplant, and every neighbour will walk with slanders.
Matthew 10:16
17
Behold, I send you forth as sheep in the midst of wolves: be ye therefore wise as serpents, and harmless as doves.