PALADINS ARE ORDER-BASED WARRIORS. They draw their power from a divine mandate to protect others, and their martial skills are integral to fulfilling that mission. A well-rounded Paladin can devastate foes with cleaving attacks and righteous vigor, but without the right feats, she might not be as deadly in close quarters as she could be. Likewise, a party’s holy warrior might lack the agility or strength needed to confront evil on its own terms, if only because she lacks one or more feats that would give her an advantage in those situations.
So while any character can benefit from feats, there are certain abilities that are ideal for Paladins. These include things like high Wisdom scores (which allow them to optimize their spells), strong melee combat abilities (so they can take on powerful adversaries head-on), and resistance to effects that hinder spellcasting (especially damaging magical defenses).
In short, if you want your Paladin to be