Like all angels, Neliel had been created for a purpose. In his case, that purpose was maintenance. The heavens did not decay on a timescale that mortals could comprehend, but they decayed nonetheless. Celestial metals rusted. Light faded. Even stone gradually wore away. Nothing lasted forever in the same condition it had always been in. Sooner or later, everything changed.
Nel had not expected his creators to ever change.
He had been wrong.