Hexameron
The term Hexameron ( Greek: Ἡ Ἑξαήμερος Δημιουργία "Hē Hexaēmeros Dēmiourgia" ) refers either to the genre of theological treatise that describes God's work on the six days of creation or to the six days of creation themselves . 
<triplet> creation <subj> Hexameron <obj> described by source