Read BP #13...why was T'challa talking like a Bible thumper from the midwest? Never recall him ever mentioning Gods besides bast?
Dude is a scientist I thought all that religion stuff was moreso the rural tribes?
As the BP, T'Challa is both the leader of the panther clan and the representative of Bast on Earth, similar to how the pope is the representative of god according to catholicism. He himself is a religious figure. Same for all leaders of each cult in Wakanda. Him mentioning the other gods made sense to me considering his position in Wakanda and him being a very knowledgeable person.
It's previously been shown that T'Challa is (at least somewhat) religious, despite his affinity for science. During See Wakanda and Die, he prayed before the big battle. When Bast showed up in Hickman's Fantastic Four, he immediately got on his knees in reverence.
Wakanda always had several gods throughout the BP publication history(white gorilla, lion, crocodile, etc). As for the ones mentioned in BP #13, those appear to be "new," similar to how "the panther god" became "Bast, the panther god."
I assume we'll be getting more info on the other gods as time goes on.