GLORY OF GOD

Inwardness, Outer Inwardness, Outwardness, Outer Outwardness These four places have glory of GOD in causative details.

Inwardness of earthly body is soul,
Outer Inwardness of earthly body is liveliness,
Outwardness of earthly body are mind, faculties of mind,
Outer Outwardness of earthly body are eye, organs of senses.

Inwardness of celestial body is fire,
Outer Inwardness of celestial body is sun,
Outwardness of celestial body is moon,
Outer Outwardness of celestial body are stars.

So 4 at earthly body, 4 at celestial body, Therefore 8 places have glory of GOD as causation.

Reference:
[1] Thiruvarut Prakasa Vallalar, ‘Thiruvarutpa’, ‘Urainadaipakuthi’, ‘kadavut prakasam’, Thiruvarut Prakasa Vallalar Deiva Nilayam, pp. 346, May 2004.