Prayer is one of three skills the Paladin has that provides healing. Holy Bolt can heal party members, and Redemption can heal the Paladin himself.
Generally speaking, Prayer is a useless skill. It works in Normal difficulty, but once monster start dealing much more damage in Nightmare and Hell, the use of Prayer diminishes rapidly. It can be used in conjunction with Cleansing; Prayer is a synergy to Cleansing, and the synergy effect is that Prayer is constantly active along with Cleansing, except it lacks the mana cost.
Lore[]
Chaste is the Paladin in the face of all temptations. Pure in body and spirit, he trusts to the splendor of the Light to rid him of all impurities. A Knight of the Faith shall neither be tainted, nor corrupted.[1]
References[]
↑Diablo II Manual, page 82. Blizzard Entertainment, 2000.