Judgement Armor

Judgement Armor is the Tier 2 set for Paladins.

Source
Tier 2 drops in Blackwing Lair, excepting the legplates (which drop from Ragnaros in the Molten Core).

Concept
"The Judgement concept is meant to be an Inquisitor-like outfit. The Silver Hand is an overall noble establishment, to be sure -- but there is a time when pleasantries must end and justice must be done. It is called the Judgement armor for a reason -- it is the Paladin's embodiment of delivering their sentence upon the enemy. This is not the defender aspect of the Paladin you're seeing; it is the commanding, faceless aspect of justice, of judgement. There is more to a Paladin than shining armor."
 * - Quote by Blizzard Poster Caydiem