Hebrews 10:26 For if we sin willfully after that we have received the knowledge of the truth, there remains no more sacrifice for sins, 27 But a certain fearful looking for of judgment and fiery indignation, which shall devour the adversaries.
The reason for this is that the guilt of such persons will be a recurring theme, where they are forgiven now, and immediately after are again found guilty, by their own choices. A convicted felon was jailed in a certain state, for a number of crimes committed, and repeated over an extended period of time, but was later released and pardoned. On his way home from incarceration, he committed the very same crimes he was convicted of.
And thus, the grace and mercy shown by the judge in question to the inmate turned out to be a waste of time, for his guilt was immediately, and deliberately incurred. When Peter asked the question: “How often should I forgive my brother?” and Jesus says seventy times seven, it does not mean that forgiveness has to be always open-ended for there can come a time when it will be foolish to forgive.
Kindness is never foolish, and thus, if a person or a nation chooses to continue in sin, after numerous offers of pardon, and mercy have been given, and rejected, then there is nothing either God, or man could do in such cases, for through their deliberate choices, the decision to do wrong becomes sealed in the mind permanently.
Luke 17: 3 Take heed to yourselves: If thy brother trespass against thee, rebuke him; and if he repents, forgive him.
May God add His blessing to the study of His word. “Good night” and God bless!