Since the sentences are not provided in this question a probable answer will serve to address. "Initiation" is defined as the start or the beginning of something, a commencement of a certain action/behavior. Moreover, initiation here could mean of something that will assess the ability or capacity of the individual before becoming a member of a peer group or certain community.
Answer:
Nature is presented as superior to humans in all inevitability in the text.
Explanation:
When the text beings, the two brothers treat nature as something they can easily control as they wish to but as it progresses, the strife between the brothers begins to culminate. It represents the infighting between humans.
Von Gradwitz and Znaeym eventually lose to the nature, not to each other as they fought for a narrow strip of forest for so long.
They remain the true interlopers of the story and the nature triumphs as something that cannot be overcome by any man.
Jonas will escape from the community, leaving all his memories for the people of the community. Jonas begs the Giver to come with him, but the Giver explains that someone needs to stay to help the others deal with those memories, or the community will be thrown into utter chaos.