Final answer:
The statement about Isaiah's experience with a little scroll is false; the imagery is related to Ezekiel, not Isaiah, and the Book of Isaiah does not describe this event.
Step-by-step explanation:
The statement regarding Isaiah having a little scroll that was sweet in his mouth which turned sour when he prophesied to the Assyrian Kingdom is false. This imagery is actually associated with the prophet Ezekiel. Isaiah's prophetic mission did not involve such a vision with a scroll. Furthermore, although the prophet Isaiah had challenging experiences delivering messages that were often met with resistance, the specific notion of sweetness turning sour as a direct result of prophesying to the Assyrians does not come from the Book of Isaiah. Instead, the Book of Isaiah, among other prophetic books in the Old Testament, denotes that prophets in Judah interpreted the destruction of Israel as a result of deviation from their covenant with Yahweh, leading them to advocate for religious reforms to avoid a similar fate.