# shame on you
This plural and refers to the priests and false prophets.
# I will put everlasting disgrace and everlasting shame on you that will not be forgotten
"I will cover you with dishonor that will last forever and shame that you will never forget" or "I will cause people to make fun of you forever. People will never forget that you were disgraced."
# that will not be forgotten
"that will last forever"