God promises a new heaven and earth and says he will never remember the former things
KJV Isaiah 65 : 17
For, behold, I create new heavens and a new earth: and the former shall not be remembered, nor come into mind.
The promise ushers in a change of diet and attitude amongst former foes
KJV Isaiah 65 : 25
The wolf and the lamb shall feed together, and the lion shall eat straw like the bullock: and dust shall be the serpent's meat. They shall not hurt nor destroy in all my holy mountain, saith the LORD.
But somehow only the serpent is said to eat dust which was previously his diet as a result of the curse in the beginning.
KJV Genesis 3 : 14
And the LORD God said unto the serpent, Because thou hast done this, thou art cursed above all cattle, and above every beast of the field; upon thy belly shalt thou go, and dust shalt thou eat all the days of thy life:
Why does the serpent continue to eat dust in the new settings?