I would hope not. 🤗 Although I consider the literature on the gods of the Faerun to need some updating, and perhaps a retcon due to how many times they die, are reborn, remade turn good or evil etc. I still find it interesting.
My recommendation? Stick with 2e material; everything up until 1999 or so is rock solid. You'll want to check out
Faiths & Avatars,
Demihuman Deities and
Powers & Pantheons for most everything you need to know. 3e material isn't bad, but not everything from the previous edition was carried over. From 4e onwards, Wizards of the Coast really screwed with
The Forgotten Realms and the deities themselves were not spared.