i got this from a webpage

Moon God 10% increase in mana intake

Sun God 10% increase in attack power of all troops

Magic Goddess +20 to your Spell Level 10% Decrease in Research time

Science Goddess 10% increase in items generation

Nature Goddess 10% increase in gold intake

Satan 10% decrease in unit Upkeep

Lucifer 10% increase in amount of units summoned

i don't know if all of them are correct but the sun god does increase the attack.

-- Anonymous, April 13, 2000