Generator - Justice Burst. Used to generate wrath and stun. Currently I'm using a 1-H and the fast attack speed lets you stun a LOT. Very useful.
Fist of the Heavens- Heaven's Tempest- Ranged pillar of fire that leaves a DOT. Awesome damage.
Judgement- Resolved. Roots all enemies in place and makes them sit in your AOE and DOTs. The 80% crit strike is AMAZING. I tried the one that pulls in but its very bad at it. Plus there's an awesome legendary that does it for you (later).
Akarat's Champion- Rally. For elites. Stay at range and constantly cast Judgement to root them. The CD resets very fast with this and you have more than enough wrath to cast fist a ton of times too. Perma root, ridic damage and full health if you die.
Heaven's Fury- Blessed Ground. Free to cast, same CD as Judgement. Huge AOE and DOT. Cast them together and boom.
Last one isn't core. I use Laws of Hope for the regen and the move speed to get out. Steed could be good too to get past walls. There aren't any necessary passives, so go with what you want...defense or offense. I like Righteousness to get more wrath from my Justice. Try it out on 70 someone?
edit: Oh the legendary is Ess of Johan. It pulls everything into a nice clump and slows them. It's amazing with this.