Now that's a good discussion . . . is it okay to game-ify the Nordic deities worshiped by some today, but not okay to game-ify the Christian/Jewish God? A discussion that would be hard to have and follow the rules here on ENWorld.
There are some differences, however. While everyone has their own opinions, their own lines they don't want crossed, traditionally Christians and Jews don't appreciate their religion being trivialized like
@Obly99 is doing here with Yahweh.
The Nordic deities have a history of being seen as "myths" and stories, and the neo-pagan Norse revival is a relatively recent phenomenon. Most Norse neo-pagans,
at least that I've met, don't have a problem with their deities being used in fantasy stories or games. Possibly because they have a different relationship with their deities than Christians and Jews do with theirs. However, I'm not a follower of Asatru (Norse neo-paganism), nor am I a Christian (although, raised Catholic).
But there is a reason why WotC hasn't published an updated "Deities & Demigods" with D&D versions of world mythological figures. I'm glad they stayed away from that minefield.
Using real-world religion in your stories and/or games isn't inherently wrong . . . . but it's easy to cross the line into something disrespectful, even without that being the intent.