peroration

noun2

1. •
   The concluding section of a discourse, either written or oral, in which the orator or writer sums up and commends his topic to his audience, particularly as used in the technical sense of a component of ancient Roman oratorical delivery.

   • This passage is virtually the peroration of the Ethics; the few paragraphs that follow are concerned with the transition to politics. — 1946
2. •
   A discourse or rhetorical argument in general.

   • Nephew, what means this passionate discourse, This peroration with such circumstance? — 1591