David
Psalm 52:2ESV·traditional attribution

Your tongue plots destruction, like a sharp razor, you worker of deceit.

John Calvin Reformed @genevareformer

PSALM 52 This psalm was composed by David at the time when the death of Abimelech and the other priests had spread universal tenor among the people, indisposing them for lending any countenance to his cause, and when Doeg was triumphing in the successful issue of his information.

Commenting on Psalm 52:1-9

C.H. Spurgeon Reformed Baptist @princeofpreachers

Thy tongue deviseth mischiefs. Thou speakest with an ulterior design. The information given was for Saul's assistance apparently, but in very deed in his heart the Edomite hated the priests of the God of Jacob. It is a mark of deep depravity, when the evil spoken is craftily intended to promote a yet greater evil. Like a sharp razor, working deceitfully.

Matthew Henry Presbyterian @wholebiblehenry

The title is a brief account of the story which the psalm refers to. David now, at length, saw it necessary to quit the court, and shift for his own safety, for fear of Saul, who had once and again attempted to murder him. Being unprovided wit harms and victuals, he, by a wile, got Ahimelech the priest to furnish him with both.

Commenting on Psalm 52:1-5