There was a willfulness to the ignorance of the wealthy Israelite elite. It is not simply that they were unaware of the problems of their people and of their time. The evidence was all around them, as Amos had been pointing out, yet they were refusing to acknowledge that evidence, choosing instead to live in a constructed reality that was favorable to them. They only saw their own wealth and apparent safety, because that was all they wanted to see.
The Israelites were longing for the Day of the Lord, thinking that it would be a day of blessing for them. Amos, however, says it won’t be what you think it will be, and you won’t be on the side of it that you think you will be.