It was from To Aru that I found out that Thor is also the God of Farming.
There is a theory among some historians that Thor not only was originally the God of Farming, but an actual farmer. The theory is that a Skald stopped by a farmhouse for lodging during a storm and was permitted to stay in the barn. Farmer's daughter (or maybe even wife) brought Skald food and ... stuck around for a bit o' first person smut. Farmer Thor came out to tack down the doors of the barn for the night, saw the two of them together, and just as he moved in to beat the tar out of the Skald with his mallet, lighting illuminated him from behind, giving him a fearsome, heroic aspect that the Skald later added to his own tales, which grew taller with each retelling until he was outwitting the God of Thunder himself...
It was in some whacko CN that I discovered that Er Lang Shen is the God of Waterways and also, God of Child Protection and Screenplay.
What other types of random BS job titles you found out about a god that you previously never knew of?
Odin the Allfather has about twenty titles - the roots of his name are 'lord of frenzy', or 'leader of the possessed' but he is also the Teacher of Runes, the Lord of the Vakyrior, and the Master of Valhalla (also some historians have recorded roughly 170 names, some with, some without, specific titles for this deity).
Everyone probably knows this but I was really surprised when I discovered that Hermes is also a patron god of thieves.
Like damn, I should've seen that coming.
Mercury (Roman name of Hermes) is the God of Messengers and Patron of Thieves, as well as the Herald of the Gods and Protector of Heralds, Travelers, Merchants, Thieves and Orators. He is also the god who ushers those souls of special merit (good or bad) to the afterlife instead of forcing them to wait with the masses for Charon's boat.