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There are two very different ways to look at this here.
If you are taking a authentic to history/religion approach, than I completely agree with Alkenstarian. I don't think there is much dispute within the history community that Snorri modified and reinterpreted the legends, bringing in both Christian elements as well perhaps elements of the greco-roman beliefs. If you want to run a game that is super authentic to the original Norse cultures and beliefs, than you are better off trying to figure out what elements are probably exaggerated and what are authentic.
If you and your players however are more interested in the legends as they have been passed down since Snorri's time, the so to speak "Pop Culture" version of Norse myth, than your group should go ahead and use those elements. Because sometimes you don't want to play in the real setting, you want to play in the Pulp/Popular interpretation of said setting.
Both are completely valid game choices, if your group is all on board.