In World of Warcraft: The Burning Crusade, how can I learn Holy Shock rank 1 as champion Blood Elves?

What is the level I if I am to learn this spell and where I can learn?

Basically you need to spend 30 points in Holy tree (one God will favor them). The required level is 40. Although you will rebuild the most precious gift in the punishment (if you're still upgrading).

‘World of Warcraft : The Burning Crusade’ Cinematic Trailer