preachment
Definitions
A sermon or religious discourse, especially one regarded as tedious or moralizing.
A tedious or tiresome lecture or piece of moral advice.
Examples
The audience grew restless during the minister's long-winded preachment on the virtues of humility.
I have no interest in listening to another moralizing preachment about how I should live my life.
Synonyms
sermon homily lecture moralizing exhortation diatribe address