Through this mysterious presence, God gives Ezekiel his mission.
Oh, and he calls Ezekiel "mortal." Like, way more than is necessary. Way to rub it in, man.
He's going to prophesy to the House of Israel. But they're pretty rebellious so Ezekiel shouldn't get discouraged if they don't listen to him.
God tells Ezekiel not to be rebellious like his people, and gives Ezekiel a scroll with words of lamentation and mourning written on them (the scroll containing his prophetic message). God tells Ezekiel to eat the scroll. Yes, you heard right.