Evil-Speaking
is,
Blasphemy;
also, railing against God or others;

also, speaking false words
in order to injure another;
making severe critical remarks on others or on their writings or manners, often implying
uncharitableness
or
ill-nature.

 

Let all bitterness, and wrath,
and anger, and clamour,
and evil-speaking,
be put away from you, with all malice.
And be ye kind to one another, tenderhearted, forgiving one another, even as God for Christ's sake
hath forgiven you.

Ephesians 4:31-32
Wherefore I say unto you, all manner of sin
and blasphemy shall be forgiven unto men:
but the blasphemy against the Holy Ghost
shall not be forgiven unto men.
And whosoever speaketh a word against the
Son of Man, it shall be forgiven him:
but whosoever speaketh against the
Holy Ghost, it shall not be forgiven him,
neither in this world,
neither in the world
to come.

Matthew 12
31 -32