God created the universe/cosmos as a work-space for human persons, made in His image and made for fellowship with Him. In this work-space, persons can grow toward knowledge of God in time: they can progress toward Him, and even begin to be in Him, in knowledge and love. God created this material work-space and He created “time” to allow movement and progression, so that human persons could grow toward their intended destiny in Him and with Him.
Before this creation, God had already created beings of pure spirit - angels - immaterial beings not at all like men. But these angelic persons had a totally different experience of their own designated “work-space”. They had no need of space, since they were/are pure spirit, not confined in a volume of space at all as we are. They had no need of time, since in His design they were not made to grow, to progress. They made a decision in the instant of their creation to be either obedient to God, or not. There was no more or other change in their being needed, hence no time - only an instant for their defining original decision for or not for God.
Thus angels exist in timelessness and spacelessness - until and unless God sends the obedient ones for some mission among men. Then they can enter time and space, for their mission as “messengers” - “angels” - created by God for men, to be helpers and messengers for the good of men.
The angel’s existence, and their nature, are instructive for us, to help us understand the possibilities for the future of men. In the new heavens and the new earth, the need for movement and for progress will be radically changed - and so will we. Paul writes that the bodies we will have in the resurrection will be not material bodies, but spiritual bodies. He writes:
1Cor 15:42 So is it with the resurrection of the dead. What is sown is perishable, what is raised is imperishable.
1Cor 15:43 It is sown in dishonor, it is raised in glory. It is sown in weakness, it is raised in power.
1Cor 15:44 It is sown a physical body, it is raised a spiritual body. If there is a physical body, there is also a spiritual body.
Is a “spiritual body” similar in some ways to angels’ pure-spiritual natures - “needing” space and time only now and then, but not always? Maybe in the resurrection, in the new heavens and the new earth, in our “spiritual bodies”, we can move from “place” to “place” in an instant - timelessly - and can be with other persons, in “moments” that are timeless as well. In other words, maybe both time and space will become entirely subjective, taken up when needed, abandoned when eternity is better, when boxes of space are unneeded limitations.