Why do you suppose a friend can't be known in prosperity?

A friend may not be fully known in times of prosperity because material success can mask true character and intentions. In such times, people may be more focused on their achievements and the accolades that come with them, potentially leading to superficial relationships. Genuine friendships often reveal themselves in adversity, where loyalty, support, and understanding are tested. Thus, it is during challenging times that the true essence of friendship becomes apparent.