God was changed by his decision to create.
That decision produced relationships that had not existed before. It introduced time into the equation, so to speak. If creation was lifeless, or if it was static, whatever change may have occurred would have been insignificant. Life introduced change that mattered.
When God decided to make man in his image, it required something of himself to enter into the picture. A thing couldn't be said to be a living picture of God without a wisp of God animating it, making it so. When that occurred God joined himself to time and creation in a way that made them in some fashion, a bit of him. Consequently, people are eternal and I infer the same could be said of angels.
When Jesus entered into the world as a flesh and blood human baby, the reality of the above distilled into perfect focus. God forever joined with creation in the body of Christ. What was true before, but only understood vaguely and seen through a mist, became crystal clear. Jesus, flesh and blood Son of God and second Adam, will always be. So will angels always be, so will humans always be.
Angels have no perpetual physical being, they are merely created spirits. Humans are created spirits joined to perpetual physical bodies. Angels were not made to be physical, humans are not what they've been made to be without physical bodies. That is why there is a resurrection of humans, saved and unsaved, but not of fallen angels who have no physical bodies. As a result, there will always be a spiritual realm in which angels exist, and there will always be a physical realm in which humans exist.
When God decided to make man in his image, it required something of himself to enter into the picture. A thing couldn't be said to be a living picture of God without a wisp of God animating it, making it so. When that occurred God joined himself to time and creation in a way that made them in some fashion, a bit of him. Consequently, people are eternal and I infer the same could be said of angels.
When Jesus entered into the world as a flesh and blood human baby, the reality of the above distilled into perfect focus. God forever joined with creation in the body of Christ. What was true before, but only understood vaguely and seen through a mist, became crystal clear. Jesus, flesh and blood Son of God and second Adam, will always be. So will angels always be, so will humans always be.
Angels have no perpetual physical being, they are merely created spirits. Humans are created spirits joined to perpetual physical bodies. Angels were not made to be physical, humans are not what they've been made to be without physical bodies. That is why there is a resurrection of humans, saved and unsaved, but not of fallen angels who have no physical bodies. As a result, there will always be a spiritual realm in which angels exist, and there will always be a physical realm in which humans exist.
The nexuses of both realms are heaven and hell. Faithful angels and redeemed humans live forever with God in an everlasting spiritual/physical realm, the New Heavens and Earth. Unfaithful angels and unsaved humans are confined inescapably to a lake of fire, also an everlasting spiritual/physical realm, the torment of which is sufficient to keep them from so much as even imagining rebellion toward God, the Creator.
When all is as it should be after the final judgment and the re-creation, will God be the same as he was apart from creating? Essentially, yes; that which he was he always will be-- perfect missing nothing. But, in Christ, he will have an everlasting physical being interfacing with physical re-creation. That will be different. Furthermore, there are all those eternal relations he has spawned between himself, mankind and angels, beings all living and interacting on the level of God's created likeness.
So, when considering the eternality of creation, can there be any doubt that God will have changed in some way given his decision to create?
