Conversation so far:
What is the first life of Raven?
Raven was conceived as the result of Trigon's marriage to Arella.
Raven grew up in an alternate dimension called Azarath.
What was Azarath like?
with pacifistic inhabitants whose spiritual leader was the mystic Azar (Pagon).
She was taught to "control her emotions" by Azar.
Why did she have to control her emotions?
in order to suppress her inherited demonic powers.
Initially, it was feared that if Raven were ever to feel any strong emotion, she could then become possessed.
What else happened in this first life time?
During this time, Raven rarely saw her mother and grew detached from her.
What about her father?
Upon Azar's death, Arella began the task of raising and teaching Raven.

Question: What did he teach her?
Self-contained rewrite: What did Raven's father, Trigon teach her?