Charles Ellicott Commentary Psalms 94:4

"They prate, they speak arrogantly: All the workers of iniquity boast themselves." — Psalms 94:4 (ASV)

How long ... and. —It is better to omit the italics, and render: They speak out of utter impudence: all evil-doers boast. The word rendered “boast” is by modern scholars connected with the Arabian title Emir, a “commander.” They make themselves out to be persons of distinction, or, perhaps, lord it over God’s people.