exhortation
noun /ˌeɡzɔːˈteɪʃn/
  /ˌeɡzɔːrˈteɪʃn/
 [countable, uncountable] (formal)- exhortation (to do something) an act of trying very hard to persuade somebody to do something - The play becomes a strong exhortation to enjoy life while you still can.
- Experience shows that encouragement and exhortation have not produced change.