Charles H. Spurgeon on Psalms 52:2

Thy tongue deviseth mischiefs, like a sharp razor, working deceitfully. Thus our version. But I do not very well understand the propriety of the tongue's devising mischief, and devising it like a sharp razor. But we may easily avoid this harsh comparison by rendering the words: You contrive mischiefs with thy tongue, as with a sharp razor, O thou dealer in deceit: i.e., you contrive with thy smooth and flattering tongue to wound the reputation and character of others, as though thou wast cutting their throats with a smooth razor. Samuel Chandler.