39:5.12
The erroneous idea that angels possess wings is not wholly due to olden notions that they must have wings to fly through the air. Human beings have sometimes been permitted to observe seraphim that were being prepared for transport service, and the traditions of these experiences have largely determined the Urantian concept of angels. In observing a transport seraphim being made ready to receive a passenger for interplanetary transit, there may be seen what are apparently double sets of wings extending from the head to the foot of the angel. In reality these wings are energy insulators — friction shields.