Passage cross-references.

The words of his mouth were smoother than butter, but war was in his heart: his words were softer than oil, yet were they drawn swords.

They speak vanity every one with his neighbour: with flattering lips and with a double heart do they speak.

Gather not my soul with sinners, nor my life with bloody men:

Their tongue is as an arrow shot out; it speaketh deceit: one speaketh peaceably to his neighbour with his mouth, but in heart he layeth his wait. …

Thus saith the LORD concerning the prophets that make my people err, that bite with their teeth, and cry, Peace; and he that putteth not into their mouths, they even prepare war against him.

They only consult to cast him down from his excellency: they delight in lies: they bless with their mouth, but they curse inwardly. Selah.

Burning lips and a wicked heart are like a potsherd covered with silver dross. …

Then shall he say also unto them on the left hand, Depart from me, ye cursed, into everlasting fire, prepared for the devil and his angels:

Behold, he travaileth with iniquity, and hath conceived mischief, and brought forth falsehood.

Thou hast seen it; for thou beholdest mischief and spite, to requite it with thy hand: the poor committeth himself unto thee; thou art the helper of the fatherless.

He deviseth mischief upon his bed; he setteth himself in a way that is not good; he abhorreth not evil.

And he spake unto the congregation, saying, Depart, I pray you, from the tents of these wicked men, and touch nothing of theirs, lest ye be consumed in all their sins.

His mouth is full of cursing and deceit and fraud: under his tongue is mischief and vanity.

Why boastest thou thyself in mischief, O mighty man? the goodness of God endureth continually.

Then went the Pharisees, and took counsel how they might entangle him in his talk. …

And these shall go away into everlasting punishment: but the righteous into life eternal.