Isaiah 48

Chapter 48 of Isaiah's book sounds like a broken record. It is the same basic message rearranged. Am I also that dense? Am I that slow to understand and repent. Am I placed in the furnace of misery (48:10) so that my faith will be purified? Then the chapter ends with a statement that, even though it is true, seems out of place. "There will be no prosperity for the wicked." When I consider the words that opened the chapter I see a pattern of teaching. Rebellion against God in the hope of prosperity. It was the temptation that led Adam and Eve in rebellion. So it shouldn't surprise me that I will face the same struggle.
Stuart