ה֤וֹי כָּל־צָמֵא֙ לְכ֣וּ לַמַּ֔יִם וַאֲשֶׁ֥ר אֵֽין־ל֖וֹ כָּ֑סֶף לְכ֤וּ שִׁבְרוּ֙ וֶֽאֱכֹ֔לוּ וּלְכ֣וּ שִׁבְר֗וּ בְּלוֹא־כֶ֛סֶף וּבְל֥וֹא מְחִ֖יר יַ֥יִן וְחָלָֽב׃
Ho, ognuno che ha sete, vieni per l'acqua, e chi non ha soldi; Vieni, compra e mangia; Sì, vieni, compra vino e latte senza soldi e senza prezzo.
Rashi on Isaiah
Ho! All who thirst Heb. הוֹי. This word הוֹי is an expression of calling, inviting, and gathering, and there are many in Scripture, [e.g.,] (Zech. 2:10) “Ho! Ho! and flee from the north land.”
Ibn Ezra on Isaiah
הוי Ho ! It is the sign of the vocative. Ho, every one that thirsteth, etc. With these words the Lord will address those who will then be desirous to accept the Law.