Hebrews 1:11-14

They will perish, but you remain forever. They will wear out like old clothing. You will fold them up like a cloak and discard them like old clothing. But you are always the same; you will live forever.” And God never said to any of the angels, “Sit in the place of honor at my right hand until I humble your enemies, making them a footstool under your feet.” Therefore, angels are only servants—spirits sent to care for people who will inherit salvation.