If you have never had an experience in which you saw a spiritual being from heaven, you probably assume that they will be clothed in white, and that they will seem to be somewhat ethereal. That is true if you are seeing them only in the realm of the spirit. However, if they are physically in the earth, you will see them as you see any other person. You will see a physical body. That is because the earth's ether hardens the spirit, and slows down the the body's energy frequency. Thus, within a few weeks of being in the earth, a spirit from heaven will have a solid body.
The same is not true of the demons from hell. They lost their ability to adjust to different ethers. Whether they are in the earth, or on the earth, their energy remains the same, significantly lower than the energy frequency of the average person. It is impossible for them to increase their energy frequency so as to generate a solid body. When you see someone whose energy frequency is extremely low, they often appear to be tired and worn. In contrast, if someone has a high energy frequency, they will be energized and vibrant.
When you meet someone who is from heaven, they often will seem to be glowing from the inside out. Similarly, the Lord God Almighty expects that those who are in the millennial kingdom will begin to glow from the inside out. They also will be full of life and energy.
The Lord God Almighty El Shaddai