exhortation (n.)

late 14c., from Old French exhortacion and directly from Latin exhortationem (nominative exhortatio) "an exhortation, encouragement," noun of action from past participle stem of exhortari "to exhort, encourage," from ex- "thoroughly" (see ex-) + hortari "encourage, urge" (from PIE root *gher- (2) "to like, want"). From early 15c. as "speech for the purpose of exhortation."