Parallel
Psalms 55:21
King James Version (1769 Blayney revision, with Apocrypha) · Berean Standard Bible
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.
His speech is smooth as butter, but war is in his heart. His words are softer than oil, yet they are swords unsheathed.