| 1. Linguistic Exegesis The temporal phrase bayom ha-hu {בַּיּ֣וֹם הַה֗וּא | ba-yôm ha-hū} functions as a prophetic time marker. The Qal imperfect yihyeh {יִֽהְיֶה֙ | yi-hyêh} expresses future certainty. The noun makor {מָק֣וֹר | mā-qôr} ‘spring’ serves as the focal subject, and the Niphal perfect niftach {נִפְתָּ֔ח | nip̄-tāḥ} conveys passive unfolding of the fountain. The prepositional constructs le-beit David {לְבֵ֥ית דָּוִ֖יד | lə-bêṯ Dā-wîd} and ū-le-yoshvei Yerushalayim {וּלְיֹשְׁבֵ֣י יְרֽוּשָׁלָ֑͏ִם | ū-lə-yōš-ḇê Yə-rū-šā-lā-yim} indicate beneficiaries, while the infinitives le-chatat and ū-le-niddah introduce the purposes of moral and ritual cleansing. This structure highlights divine provision of purification in eschatological fulfillment. |