Matthew Poole's English Annotations on the Holy Bible - Psalms 12:5
For the oppression of the poor; oppressed by Saul through the instigation and artifices of his fawning courtiers. Now; speedily, sooner than they imagine or expect. From him that puffeth at him, i.e. from him that despiseth him, and hopeth to destroy him with a puff of breath, or a parcel of words. See this phrase Psalms 10:5. Only there it is construed with beth, and here with lamed; which may make some difference. And the supplement in our translation may seem to be large, and not necessary.... read more
Matthew Poole's English Annotations on the Holy Bible - Psalms 12:4
With our tongue will we prevail, by raising and spreading slanders and evil reports concerning him, whereby both Saul will be highly and implacably enraged against David, and the hearts of the people alienated from him; which was indeed a very likely way to prevail against, him, and that by their tongues only. Our lips are our own, i.e. at our own dispose to speak what we please. Who is lord over us; who can control or restrain us? This was not the language of their mouths, for they were... read more