Places a Blessing on the friendly target, increasing Strength, Agility, Stamina, and Intellect by 5%, and all magical resistances by X for 1 hour. If target is in your party or raid, all party and raid members will be affected. Players may only have one Blessing on them per Paladin at any one time.
The subject of this section has been removed from World of Warcraft.
Paladins also have Greater Blessings, which includes a [Greater Blessing of Kings] which can be learned (purchased) from the Class Trainer. Each Greater Blessing affects all players of the targeted class within your party or raid and lasts for 30 minutes (as of patch 2.2).
Blessing of Kings applies its bonus to stats after all other buffs and auras on the target are added, making the cumulative effect potentially greater than any other class buff.
Blessing of Kings is not as effective as it was before TBC; gear then mainly boosted primary attributes: strength, agility, intellect, spirit and stamina. Itemization since TBC emphasizes secondary attributes such as attack power, critical strike rating, and spell damage, which are not directly improved by Blessing of Kings.
In PvE, it is still the most wanted buff for tanks. Healers and DPS might prefer [Blessing of Might].
In PvP, it is usually the best blessing for any class, as having high stamina is vital in surviving enemy players' attacks.
Friendly boss characters (like capital faction leaders and the 2 generals in Alterac Valley, Vanndar Stormpike and Drek'thar) are immune to Blessing of Kings, perhaps because the added bonus would be too strong on those NPCs.
Patch 4.0.1 (2010-10-12): Is now trainable at level 22, provides a 5% bonus to Strength, Agility, Intellect, and Stamina, and provides an amount of spell resistance dependent on level (65 at level 80). Lasts 1 hour, and affects all members of the target's party or raid. No longer stacks with [Mark of the Wild].
Patch 3.1.0 (2009-04-14): Is now trainable at level 20 and provides a 10% bonus to all base stats. Removed from talent trees along with [Improved Blessing of Kings].
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[Greater Blessing of Kings] which can be learned (purchased) from the Class Trainer. Each Greater Blessing affects all players of the targeted class within your party or raid and lasts for 30 minutes (as of patch 2.2).
[Symbol of Kings] which can be purchased at any reagent vendor.
[Blessing of Might].
[Mark of the Wild] or 
