According to Jesus, what will happen to the haves and the have-nots?

The haves will be given even more, while the have-nots will have what little they have taken away.

For whosoever hath, to him shall be given, and he shall have more abundance: but whosoever hath not, from him shall be taken away even that he hath. Matthew 13:12

(See also Matthew 25:29)