They are referred to as “the things in the heavens ” because they have a heavenly hope and“ are to rule as kings over the earth ” and serve as priests to God.
وَيُشَارُ إِلَيْهِمْ بِعِبَارَةِ « مَا فِي ٱلسَّمٰوَاتِ » لِأَنَّهُمْ يَتَمَتَّعُونَ بِرَجَاءٍ سَمَاوِيٍّ « وَسَيَمْلِكُونَ عَلَى ٱلْأَرْضِ » وَيَخْدُمُونَ كَهَنَةً لِلهِ .‏