I really like this concept and here are some of my ideas for it.
Javelin fits the concept too, if you consider Greco-Roman gods. (Thor, Zeus, these types of Gods fit this)
Also, rename godhammer to "Thunderbolt" Incorporate the build into the default paladin by using the Channel Divinity feature.
Channel Divinity: Divine Thunderbolt
You channel divine power into your weapon, letting you hurl it with the force of a thunderbolt.
Encounter Divine
Minor Action Melee touch
Target: One held weapon
Effect: Until the end of the encounter, you may treat the weapon as if it has the Heavy Thrown property with range 3/6. If it already has the Heavy Thrown property, you instead gain a +1 to hit and increase its normal and long range by 2 squares when you wield it. This weapon returns to you when you throw it as if it were magical.
I also suggest adding an at will,
Lightning Strike Paladin Attack 1
You hurl your weapon with divine fury, which strikes its target with a crash of thunder.
At-Will Divine, Thunder, Weapon
Standard Action Ranged weapon.
Requirement: You must be wielding a Heavy Thrown weapon.
Attack: Strength vs. AC
Hit: 1[W] + Strength modifier damage, and one enemy adjacent to the target takes thunder damage equal to your Wisdom modifier.