Proverbs 26:25
When he speaketh fair, believe him not: for there are seven abominations in his heart.
– Proverbs 26:25
This verse continues from the previous, so it is the hating man who speaketh fair. He uses gracious speech to mask what is within. In this case, seven abominations are concealed within. This could be a reference to the seven abominations of Proverbs 6:16-19, but more likely speaks of completion in the sense his heart is thoroughly abominable. Wisdom teaches to discern character and not judge merely by outward appearance, and warns against believing the fair sounding words.