Genre: 
Full text: 
Rerum deus tenax vigor immotus in te permanens lucis diurnae tempora successibus determinans | Largire clarum vespere quo vita numquam decidat sed praemium mortis sacrae perennis instet gloria | Praesta pater piissime patrique compar unice cum spiritu paraclito regnans per omne saeculum
Fulltext source: 
http://www.preces-latinae.org/thesaurus/Hymni/RerumDeus.html
Notes: 
The 1632 Urban VIII revision of this hymn is nearly identical and so shares this Cantus ID. Note the following differences: "lumen" and "nusquam" in stanza 2 (Urban VIII) instead of "clarum" and "numquam".
CAO sources: 
S
CAO: 
8382