A decree CANNOT be lifted not even by the King, the one whose decree it is. Therefore, . . . No remedy and no one higher to appeal to. Now do a re-read.
Where is that written? The decree of Nebuchadnezzar was reversed.
Daniel 2:13-15 KJV
(13)
And the decree went forth that the wise men should be slain; and they sought Daniel and his fellows to be slain.
(14) Then Daniel answered with counsel and wisdom to Arioch the captain of the king's guard, which was gone forth to slay the wise men of Babylon:
(15) He answered and said to Arioch the king's captain,
Why is the decree so hasty from the king? Then Arioch made the thing known to Daniel.
I grant that under the laws of the Medes and Persians a decree cannot be reversed (Daniel 6:15) but God isn't subject to the laws of the Medes and Persians. Why were you making that assumption? God can reverse his own decree if he chooses. He has done so before.
Jonah 3:4,5,10 KJV
(4) And Jonah began to enter into the city a day's journey, and he cried, and said,
Yet forty days, and Nineveh shall be overthrown.
(5) So the people of Nineveh believed God, and proclaimed a fast, and put on sackcloth, from the greatest of them even to the least of them.
(10)
And God saw their works, that they turned from their evil way; and God repented of the evil, that he had said that he would do unto them;
and he did it not.
I think you are forgetting the gospel of Jesus Christ. We were all decreed to die from the day of Adam's transgression. Mercy and salvation is the reversal of that decree. It's right there in the gospel of John, 3rd chapter, skipping ahead to verses 17 and 18.
John 3:17-18 KJV
(17) For God sent not his Son into the world to condemn the world; but that the world through him might be saved.
(18) He that believeth on him is not condemned:
but he that believeth not is condemned already, because he hath not believed in the name of the only begotten Son of God.
We were already decreed dead. That decree can be reversed. See Acts 16:30-31, "What must I do to be saved?"
They as with Hebrews 6:4-6 KJV ???????, where both examples are about those who were knowledgeable and more than knowledgeable about God. So this is NOT about unbelievers but about believers who NO LONGER WANTED GOD IN THEIR MIND, WILL, EMOTIONS, LIFE OR ANOTHER PART OF THEIR EXISTENCE, DO YOU NOW UNDERSTAND???
No, do not understand. The previous passage was not in the context of having tasted of the fruits of the Holy Ghost and having turned away. But let's focus on the concept of the aforementioned decree. Why did you have the impression that a decree cannot be reversed?