How do we know salvation is found only in the Lord?

Jonah's journey underscores the doctrine of total dependence on God's salvation. When trapped in the belly of the fish, Jonah realized he could not deliver himself; rather, his rescue exemplified that salvation is a work of the Lord alone. This is true for all humanity, as scripture asserts that there is no other name under heaven by which we can be saved (Acts 4:12). Furthermore, Jonah's ordeal foreshadows Christ's death and resurrection, emphasizing that genuine hope and salvation are rooted in the sovereign mercy of God and not in our own merits or actions.