Anger was eating Jonah up just like the worm had eaten up the vine. You and I might start out being angry at the big things, but unresolved anger just sits there waiting to be triggered until it comes screaming out over every little thing.
Through the dark of night, unseen and unheard, as Jonah slept peacefully, the balance shifted, and the plant began to die. By morning, there was nothing left but the shriveled remains of what once was.
Without being mindful, it is easy to think about spiritual things through the lens of our culture’s mindset and worldview. In Jonah’s day, it was culturally and societally supported to hate certain people groups, such as the Assyrians, and to assume God hated them too.