Answer:
Churchill use rhetoric to advance his purpose and how he structure his speech to support his central claim is explained below in details.
Step-by-step explanation:
Churchill practices a metaphor that matches the recently established United Nations to a church, thereby extending his argument that the United Nation's purpose to ensure harmony and maintain sovereignty is a moralistic and ethical one that must be maintained.
And not only this he makes a furthermore stronger argument by applying and contrasting distinct, opposing metaphors in addition to the one commented on in the above paragraph that it is a strength of action and not just a few words, that it is a real temple of harmony in which the shield of many countries can someday be hung up.