Complex sentence: On the other hand, other scholars believe that there are no such things as heavenly Jinn or fiery angels, and thus Satan was not an angel, but a Jinn whom God elevated to Heaven as a reward for his worship and righteousness.
Split into simpler sentences: On the other hand, other scholars believe that there are no such things as heavenly Jinn or fiery angels, and thus Satan was not an angel. He was a Jinn whom God elevated to Heaven as a reward for his worship and righteousness.