Jeremiah 9:4
"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."
Cross References (ranked by relevance)
Thou shalt not go up and down as a talebearer among thy people: neither shalt thou stand against the blood of thy neighbour: I am the LORD.
He that hideth hatred with lying lips, and he that uttereth a slander, is a fool.
They are all grievous revolters, walking with slanders: they are brass and iron; they are all corrupters.
A man that beareth false witness against his neighbour is a maul, and a sword, and a sharp arrow.
And the brother shall deliver up the brother to death, and the father the child: and the children shall rise up against their parents, and cause them to be put to death.
These six things doth the LORD hate: yea, seven are an abomination unto him:
And he said, Thy name shall be called no more Jacob, but Israel: for as a prince hast thou power with God and with men, and hast prevailed.
A false witness that speaketh lies, and he that soweth discord among brethren.
In thee are men that carry tales to shed blood: and in thee they eat upon the mountains: in the midst of thee they commit lewdness.
He that backbiteth not with his tongue, nor doeth evil to his neighbour, nor taketh up a reproach against his neighbour.
For even thy brethren, and the house of thy father, even they have dealt treacherously with thee; yea, they have called a multitude after thee: believe them not, though they speak fair words unto thee.
And ye shall be betrayed both by parents, and brethren, and kinsfolks, and friends; and some of you shall they cause to be put to death.
That no man go beyond and defraud his brother in any matter: because that the Lord is the avenger of all such, as we also have forewarned you and testified.
But beware of men: for they will deliver you up to the councils, and they will scourge you in their synagogues;