# Whoever speaks any word against the Son of Man

"If a person says anything bad about the Son of Man"

# the Son of Man

Jesus is speaking about himself. 

# that will be forgiven him

"God will forgive a person for that"

# that will not be forgiven him

"God will not forgive that person"

# neither in this world, nor in that which is to come

"in this life or in the next life" or "now or ever"