Further not his wicked device— Or, as the original may be rendered, Permit not his wicked device to go forward, or be advanced: so the prayer is, not so much that God would not give him good success, as that he would interpose to his hindrance, and blast and frustrate his designs, instead of permitting them to prosper. Mudge, in agreement with Bishop Hare, renders the next clause and the following verse, Let those that beset me lift up the head: Let the labour of their own lips cover them.
Related Commentaries of Psalms 140:8
Psalms 140:8
8 Grant not, O LORD, the desires of the wicked: further not his wicked device; lest they exalt themselves. Selah.