What foreshadows the knowledge Jonas receives?

Events like the Ceremony of Twelve and Jonas's selection as Receiver foreshadow the knowledge he will receive, suggesting it will be significant and potentially unsettling. The Giver's initial vague explanations also hint at the deep truths Jonas will uncover. Additionally, Jonas's growing sense of disquiet about the strictness of the community and his conversations with the Giver foreshadow the challenging information he will come to learn.