Psalm 55:21 KJV
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.
Psalm 55:19–23 KJV Chapter Context
19
God shall hear, and afflict them, even he that abideth of old. Selah. Because they have no changes, therefore they fear not God.
20
He hath put forth his hands against such as be at peace with him: he hath broken his covenant.
21
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.
22
Cast thy burden upon the LORD, and he shall sustain thee: he shall never suffer the righteous to be moved.
23
But thou, O God, shalt bring them down into the pit of destruction: bloody and deceitful men shall not live out half their days; but I will trust in thee.