Bible Norse

In the Bible it states that there will be a 3.5 year long "darkness" period,

Fumbulwinter is a winter that lasts a span of three summer.

also in the bible it states that there are more gods but God is the true god,

in Norse (and greek) they are Polytheistic meaning multiple gods in Norse they have Odin, Freya, Thor, Loki etc.

Revelations and Norse line up in a sense they both end with destruction of humanity,

Revelations tells the tale of Nostradamus vision,

Norse tells us About Ragnarok with is the end of the world and humanity too.