Proverbs 26:25
when he speaks graciously, believe him not, for there are seven abominations in his heart;
Psalm 28:3
Do not drag me off with the wicked, with the workers of evil, who speak peace with their neighbors while evil is in their hearts.
Psalm 12:2
Everyone utters lies to his neighbor; with flattering lips and a double heart they speak.
Proverbs 6:16-19
There are six things that the LORD hates, seven that are an abomination to him:
Jeremiah 9:2-8
Oh that I had in the desert a travelers' lodging place, that I might leave my people and go away from them! For they are all adulterers, a company of treacherous men.
Jeremiah 12:6
For even your brothers and the house of your father, even they have dealt treacherously with you; they are in full cry after you; do not believe them, though they speak friendly words to you."
Micah 7:5
Put no trust in a neighbor; have no confidence in a friend; guard the doors of your mouth from her who lies in your arms;
Matthew 24:23
Then if anyone says to you, 'Look, here is the Christ!' or 'There he is!' do not believe it.