Final answer:
The narrator and their companions felt it was time to move on after staying by Jonas's grave, as suggested by their determination to pursue freedom and avoid acceptance of subjugation.
Step-by-step explanation:
Based on the context provided by the excerpts, it seems likely that the narrator and their companions packed up and walked away from Jonas's grave after staying there for four days and four nights because they felt it was time to move on. This is understood through the expressed urgency to pursue freedom, a determination to not sit down and accept subjugation, and the recognition of life's fleeting chances for vital changes. The excerpts reflect the emotional and psychological state of individuals in the face of loss or change; pushing them to move forward in their journey, be it towards freedom, off to new adventures, or in dealing with grief and moving past trauma.