Latin to English Art/Literary Poetry & Literature

I'm not sure I'm following the use of the genitives in this sentence:

Nostris eandem calicum curam fuisse, eò minus mirum, quod strenuæ honoratæque immoderatæ potationis exemplo præiverat Thor Deus, qui in eâ arte excellere sibi ipsi visus est, mythologiâ Eddæ quadragesimâ primâ docente.

Also, is præiverat correct as "provide, supply?"

Here is my rendering:

For us there was the same cup [of] concern [to bear], and there is little wonder in this, because the god Thor provides an example of vigorously and honorably drinking in excess, who himself is seen to excel in that art, as the forty-first part of the mythology of the Eddas teaches.