How to Kill Zombies Without a Chainsaw in 10 Easy Steps

Step 1: Activate Divine Shield
Step 2: Wade into a mob of zombies
Step 3: Activate Avenging Wrath and use trinkets
Step 4: Consecrate
Step 5: Holy Wrath
Step 6: Divine Storm
Step 7: Raise hell until the bubble runs out
Step 8: Run the f!$% away, using Judgement and Exorcism at range and dropping new Consecrates behind you
Step 9: Hammer of Justice anything that gets close to you
Step 10: Spam Cleanse on yourself as you run and wait for cooldowns to come back up

If you get other paladins to follow this procedure in tandem with you, you'll have some piles of zombie corpses. Defend your home! For the Light!