Words convey not just information but also emotions and feelings. What if Jehovah had used angels as writers?
وَقَدْ تَجَلَّتْ حِكْمَةُ يَهْوَهَ ٱلْعَظِيمَةُ فِي ٱسْتِخْدَامِهِ بَشَرًا لِتَدْوِينِ ٱلْكِتَابِ ٱلْمُقَدَّسِ .‏