Divine Light

Divine Light is the strongest of the Paladin's three main healing spells (ignoring Holy Shock for the sake of spells all three specs can use). It has roughly the same mana cost of Flash of Light, but the same cast time as Holy Light, making the spell text "good for periods of heavy damage" fit right in.

Rank table
Divine Light is trained at level 62 for. Starting with patch 4.0.1, all spells automatically scale with character level, becoming more powerful each time a character gains a new level. The following table lists the base power of Divine Light at various levels up to 80:

Talents

 * Beacon of Light: The target becomes a Beacon of Light to all members of your party or raid within a 60 yard radius. Each heal you cast on party or raid members will also heal the Beacon for 50% of the amount healed.  Only one target can be the Beacon of Light at a time. Lasts 1 min.
 * Clarity of Purpose: Reduces the casting time of your Holy Light and Divine Light spells by 0.15/0.3/0.5 sec.
 * Conviction: Gives you a 3% bonus to damage and healing for 15 sec after causing a critical effect from a weapon swing, spell, or ability. This effect stacks up to 3 times.
 * Daybreak: Your Flash of Light, Holy Light and Divine Light have a 10/20% chance to make your next Holy Shock not trigger a cooldown if used within 12 sec.
 * Divinity: Increases all healing done to and by you by 2/4/6%
 * Protector of the Innocent: Casting a targeted heal on any target, including yourself, also heals you for X.
 * Speed of Light: Casting Holy Shock grants 10/20/30% spell haste for your next Flash of Light, Holy Light or Divine Light, and casting Holy Radiance grants you 20/40/60% movement speed for 4 sec. Also lowers the cooldown on Holy Radiance by 30 sec at all times.
 * Tower of Radiance: Healing the target of your Beacon of Light with Flash of Light, Holy Light or Divine Light has a 33/66/100% chance to generate a charge of Holy Power.