See here, 1. What the scorner does. It is implied that he sows discord
and makes mischief wherever he comes. Much of the strife and contention
which disturb the peace of all societies is owing to the evil
interpreter (as some read it), that construes every thing into the
worst, to those that despise and deride every one that comes in their
way and take a pride in bantering and abusing all mankind. 2. What is
to be done with the scorner that will not be reclaimed: Cast him out of
your society, as Ishmael, when he mocked Isaac, was thrust out of
Abraham's family. Those that would secure the peace must exclude the
scorner.