Sermon

5 clues
Speech
Lecture.
Pastor's address
Moralising lecture
Mass communication?
Similar answers:
Abaser
Abasers
Abaserunner
Absolutemonarch
Abstruser
Abuser
Abusers
Accuser
Accusers
Acertaincommon
Aclockworklemon
Acrimonious
Acrimony
Activeservice
Adceremonies
Additionalmoney
Addresser
Addressers
Addserialcables
Adiamondisforheifer