r/Assyriology

“A hymn to Nisaba

This hymn describes the great goddess Nisaba as patron deity of scribes and
accountants. She carries a lapis lazuli tablet, the colour of the night sky, from
which she reads the future through celestial omens.”

“She carries a lapis lazuli tablet, the colour of the night sky” why is the tablet of this particular colour and why does a scribe goddess of corn read omens out of the night sky?