Who are the seraphim?

by Yvette van Niekerk Isaiah 6: 1 – 2 AMP Isaiah’s Vision 6 “In the year that King Uzziah died, I saw [in a vision] the Lord sitting on a throne, high and exalted, with the train of His royal robe filling the [most holy part of the] temple. Above Him seraphim (heavenly beings) stood;