These are oblique case forms of the feminine singular demonstrative: ταύτῃ (dative, 'to/for this'), ταύτης (genitive, 'of this'), and ταύτην (accusative, 'this' as direct object). Each form served specific grammatical functions while maintaining reference to a feminine singular noun. The dative marked indirect objects, location, or means; the genitive indicated possession or relationship; the accusative signaled direct objects. In biblical narrative and discourse, these forms were essential for maintaining coherent reference across clauses and sentences. They allowed writers to point back to feminine nouns—women, cities, concepts—without repeating the noun itself, creating more elegant and efficient Greek prose.