What the Bible says about Permanence of God's Law
(From Forerunner Commentary)
The construction here reinforces the meaning. It is not just "forever" but "forever and ever" that His commandments stand fast. Does that sound like God would to do away with His law? If they stand fast, nothing can move them, regardless of how many people say, "The law is done away."
John W. Ritenbaugh
The Covenants, Grace, and Law (Part Ten)