All unseen rebellious spirits or beings were permitted to move and act freely to a certain extent. And Christ allowed this, in part, to let everyone on the terrestrial realm (e.g. earth) and the celestial realm see, without a shadow of a doubt, the folly of their actions that "the way of the transgressor is hard"; that "within every sin is concealed the seed of its own destruction"; that “the wages of sin is death."
The fallen spirits were all children of Christ Michael before they fell. The love of Christ towards them did not stop because they fell. There is always an abundance of room for forgiveness towards any and all creatures. The forgiveness of God is not only available for humans. It is also available for fallen angels, fallen Celestial Sons like Lucifer, Satan, Caligastia, etc. Christ Michael was patient with them, in part, because he gave them time to repent. If you sincerely repent, you will be forgiven - whether you are a human being, an angel or a spirit.
Now, some people find this shocking and unacceptable! But please, why? There is no God-inspired scripture that says our heavenly Father can forgive human beings but CANNOT forgive angels or unseen spirits who err or fall away. None. Please remember, Christ created all those fallen angels and fallen Sons! He loves them just like he loves us - even if we stray away. Christ offers forgiveness to all.
Concerning Lucifer, the records show:
"...He was long offered opportunity for repentance, but only some of his subordinates ever accepted the proffered mercy. The Faithful of Days of Edentia, on the request of the Constellation Fathers, in person presented the plan of Michael for the saving of these flagrant rebels, but always was the mercy of the Creator Son rejected and rejected with increasing contempt and disdain." - The Urantia Book, Paper 53:2.5, "The Lucifer Rebellion"
From 53:2.5, we see that some of Lucifer's subordinates accepted the proffered mercy - they repented. And they were forgiven. 🙏
Christ Michael (aka Jesus Christ) offered forgiveness to the fallen angels and other fallen spirits:
"Early in the days of the Lucifer rebellion, salvation was offered all rebels by Michael. To all who would show proof of sincere repentance, he offered, upon his attainment of complete universe sovereignty, forgiveness and reinstatement in some form of universe service. None of the leaders accepted this merciful proffer. But thousands of the angels and the lower orders of celestial beings, including hundreds of the Material Sons and Daughters, accepted the mercy proclaimed by the Panoptians and were given rehabilitation at the time of Jesus’ resurrection nineteen hundred years ago..." - Paper 53:9.1, "The Lucifer Rebellion"
Paper 53:9.1 reveals two key things:
1) They were offered salvation in the early days of the rebellion. This was about 200,000 years ago.
"Early in the days of the Lucifer rebellion, salvation was offered all rebels by Michael."
2) They were offered salvation again after Michael, as "Jesus of Nazareth", son of man and Son of God, attained full or complete sovereignty over the universe of his own creation, the universe of Nebadon, our local universe.
"To all who would show proof of sincere repentance, he offered, upon his attainment of complete universe sovereignty, forgiveness and reinstatement in some form of universe service."
So, clearly, from the beginning of the Lucifer rebellion to when Christ was here as Jesus (or Yeshua) and even up until now, our heavenly Father and his Christ continues to leave the door of salvation open to his unseen misguided and rebellious children. This is huge! It opens our eyes to the infinite greatness of the love of God towards all - human beings, angels, "Sons of God", etc, etc.
Some people find it very difficult to accept that God will or can forgive Lucifer, Satan, Caligastia, etc. BUT PLEASE, remember, God is not man! Can you recall the parable of the prodigal son? His father continued to have love for him and forgiveness towards him - even though he went astray! If a human father can forgive his erring or even wicked children, please, how much more God the Father? God, the Father of fathers, the Father of spirits, the Father of all, the Father of love! How much more! He is the Father of human beings and spirits as well. His heart is infinitely large enough to accommodate and forgive all... Please, stop and meditate on this for a minute. 🙏
Some people argue that it is not fair to forgive rebellious spirits because of the great atrocities they have committed. Some people even say that they can never repent. But we see from paper 53 that some of them have repented. Also, if you as a human being can forgive your human children regardless of their atrocities, then please, what makes you think our heavenly Father cannot forgive his spirit children regardless of their atrocities? 🤔