The promise is now extended. They must have known through Jeremiah and perhaps through other faithful prophets and faithful priests, that if they did obey God, then they would dwell in the land. If they did not, then they were going into captivity. But there was a whole body of false prophets and false priests who were telling the people, "Good times are here again! Everything is fine. You don't have to worry. Just keep going on the way you are. Everything is all right."