A prophet delivers a sharp rebuke to the Israelites, cutting straight to the root of their troubles rather than offering an immediate solution to their distress [ביאור שטיינזלץ]. God had explicitly warned the people not to honor or worship the gods of the Amorites.
The primary approach among commentators is that the current crisis is the direct result of ignoring this warning. The low state and the suffering that have fallen upon the Israelites serve as a strict punishment for rebelling against God and failing to keep the condition He set for them. Emerging from this harsh message is a clear demand that the people must correct their actions and return to Him [ביאור שטיינזלץ].