For their heart studieth destruction, and their lips talk of mischief.
Ver. 2. For their heart studieth destruction.] Great students they are; wittily wicked; but they consult shame and confusion to them and theirs.
And their lips talk of mischief.] The mischief that they machinate budgeth and blistereth out at their tongues' ends. They are even big with it, and not well till delivered.