0
Righteousness is the belt of truth in god's armour.
yes
Once you get up to black belt level thee in koptic christianity, you get the full armor of God and your HP bar will expand to 320.
orcus helm, orcus boots, orcus gloves, orcus belt, orcus plate etc.
No - Light armor is leather, cloth, etc.
Plate armor is considered heavy armor.