‘It came to pass the same year’ – not the same year as that referred to in chapter 27. This isn't the speech to Jehoiakim at the beginning of the previous chapter, the year of that.
We are warned that people engage in phony prophecies. ‘The Lord said this to me today. The Lord said that to me today. Such and such a thing is going to happen to this one, and to that one’, and so on. They become more extravagant as time goes by, until the one making these false claims is likely to become deluded themselves, and then you really do go in for extravagant prophecies and statements. But the pride of the people, and the idolatry of the people, and the moral liberty that the people wanted to worship variously, and to do as they pleased, meant that they chose to believe these false prophets, however extravagant they became.