# It is enough for the disciple that he should be like his teacher

"The disciple should be satisfied to become like his teacher"

# the servant like his master

"the servant should be satisfied to become only as important as his master" 

# If they have called the master ... how much worse ... they call ... the members of his household

Again Jesus is emphasizing that since people have mistreated him, his disciples should expect people to treat them the same or worse.

# how much worse will be the names they call the members of his household

"the names that they call the members of his household will certainly be much worse" or "they will certainly call the members of his household much worse names"

# If they have called

"Since people have called"

# Beelzebul

This name here refers to Satan. It can either be 1) transcribed as “Beelzebul” or 2) translated as “Satan.”