The only thing he could do was to beg God to forgive. Amos prayed for his people with compassion and honesty. Tiny Israel, he said, "would not survive judgement." Twice Amos, interceded and twice God withdrew His judgement. Amos stepped in between the people and God, and negotiated their survival.
Prayer changes things. Amos shows us what to do with impossible problems. Of course, prayer doesn't take the place of solid leadership; Amos continued to perform his job of truth telling to the people . Yet he reminds us how powerful our prayers can be in the face of trouble. Sometimes we have no idea what kind of changes we orchestrate or what kind of pain we spare others by what we do in our prayer closet!