Because the holy spirit produces qualities that are expressive of our heavenly Father’s personality, when we grieve it we grieve, or sadden, him ​ — something we surely do not want to do.
وَبِمَا أَنَّ أَبَانَا ٱلسَّمَاوِيَّ هُوَ مَصْدَرُ ٱلرُّوحِ ٱلْقُدُسِ ٱلَّذِي يُنْتِجُ فِينَا صِفَاتٍ تَعْكِسُ شَخْصِيَّتَهُ ،‏ فَإِنَّ إِحْزَانَ ٱلرُّوحِ هُوَ بِمَثَابَةِ إِحْزَانِ يَهْوَه .‏